{"id":939,"date":"2026-04-07T11:53:09","date_gmt":"2026-04-07T11:53:09","guid":{"rendered":"https:\/\/hxcnc.com\/?page_id=939"},"modified":"2026-06-09T08:49:03","modified_gmt":"2026-06-09T08:49:03","slug":"helical-gears","status":"publish","type":"page","link":"https:\/\/hxcnc.com\/uk\/product\/helical-gears\/","title":{"rendered":"\u0413\u0435\u043b\u0456\u043a\u0430\u043b\u044c\u043d\u0456 \u0437\u0443\u0431\u0447\u0430\u0441\u0442\u0456 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0456"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"939\" class=\"elementor elementor-939\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-81e2ccb e-con-full e-flex e-con e-parent\" data-id=\"81e2ccb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c51e222 elementor-widget elementor-widget-html\" data-id=\"c51e222\" data-element_type=\"widget\" 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strong{color:var(--text);font-weight:500}\n\n\/* CTA *\/\n.hxc-cta{background:var(--primary);padding:80px 48px;text-align:center;position:relative;overflow:hidden}\n.hxc-cta::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 25% 50%,rgba(255,255,255,.07),transparent 60%),radial-gradient(ellipse at 75% 50%,rgba(255,255,255,.05),transparent 60%)}\n.hxc-cta>*{position:relative;z-index:1}\n.hxc-ctat{font-family:var(--hd);font-size:clamp(24px,3vw,36px);font-weight:700;color:#fff;line-height:1.2;margin-bottom:12px}\n.hxc-ctasb{font-size:15px;color:rgba(255,255,255,.72);margin-bottom:32px;max-width:460px;line-height:1.7}\n.hxc-ctabs{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}\n.hxc-ctan{margin-top:16px;font-size:12px;color:rgba(255,255,255,.45);font-family:var(--mn)}\n\n\/* REVEAL *\/\n.hxc-rv{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}\n.hxc-rv.in{opacity:1;transform:none}\n\n\/* RESPONSIVE *\/\n@media(max-width:1024px){\n  .hxc-inner{padding:0 32px}\n  .hxc-sg{padding:0 32px}\n  .hxc-hg{grid-template-columns:1fr;min-height:auto}\n  .hxc-hr{height:360px}\n  .hxc-hl{padding:56px 32px;border-right:none}\n  .hxc-cw{grid-template-columns:1fr}\n  .hxc-cb.on{grid-template-columns:1fr}\n  .hxc-cimg{display:none}\n  .hxc-gg{grid-template-columns:repeat(6,1fr)}\n  .hxc-a{grid-column:span 4;min-height:260px}\n  .hxc-b,.hxc-c,.hxc-d,.hxc-e,.hxc-f,.hxc-gg7,.hxc-gg8{grid-column:span 3;min-height:150px}\n  .hxc-qg,.hxc-casg{grid-template-columns:1fr}\n  .hxc-trg{grid-template-columns:repeat(2,1fr)}\n}\n@media(max-width:768px){\n  .hxc-inner{padding:0 20px}\n  .hxc-sg{padding:0 20px}\n  .hxc-s,.hxc-s-sf,.hxc-s-cd{padding:52px 0}\n  .hxc-hl{padding:48px 20px}\n  .hxc-gg{grid-template-columns:1fr 1fr;gap:6px}\n  .hxc-a,.hxc-b,.hxc-c,.hxc-d,.hxc-e,.hxc-f,.hxc-gg7,.hxc-gg8{grid-column:span 2;min-height:150px}\n  .hxc-sg{grid-template-columns:repeat(2,1fr)}\n  .hxc-st:nth-child(2){border-right:none}\n  .hxc-st:nth-child(3){border-right:0.5px solid var(--border)}\n  .hxc-apg,.hxc-tsg{grid-template-columns:1fr 1fr}\n  .hxc-psg{grid-template-columns:1fr 1fr;gap:32px}\n  .hxc-psg::before{display:none}\n  .hxc-mg{grid-template-columns:1fr 1fr}\n  .hxc-trg{grid-template-columns:1fr}\n  .hxc-faq-grid{grid-template-columns:1fr;gap:0}\n  .hxc-csb{display:flex;overflow-x:auto;border-right:none;border-bottom:0.5px solid var(--border)}\n  .hxc-ct{border-left:none;border-bottom:3px solid transparent;white-space:nowrap}\n  .hxc-ct.on{border-left:none;border-bottom-color:var(--primary);background:var(--surface)}\n  .hxc-cta{padding:56px 20px}\n}\n@media(max-width:480px){\n  .hxc-h1{font-size:30px}\n  .hxc-hbtns,.hxc-ctabs{flex-direction:column;align-items:stretch}\n  .hxc-btn{justify-content:center;width:100%}\n  .hxc-apg,.hxc-tsg,.hxc-mg{grid-template-columns:1fr}\n  .hxc-casg,.hxc-trg{grid-template-columns:1fr}\n}\n<\/style>\n\n<div class=\"hxc-wrap\">\n\n<!-- \u2550\u2550\u2550 HERO \u2550\u2550\u2550 -->\n<div class=\"hxc-hero\">\n  <div class=\"hxc-hg\">\n    <div class=\"hxc-hl\">\n      <div class=\"hxc-badge\"><span class=\"hxc-dot\"><\/span>Precision helical gear manufacturer \u00b7 Ships worldwide<\/div>\n      <h1 class=\"hxc-h1\">Custom <em>Helical Gears<\/em><br>CNC Hobbed &amp; Ground<\/h1>\n      <p class=\"hxc-hdesc\">High-performance helical gears \u2014 single, double helical (herringbone), internal helical ring gears, helical pinion shafts, crossed helical, and helical rack-and-pinion sets \u2014 manufactured to DIN \/ AGMA standards. Helix angles 5\u00b0\u201345\u00b0, module 0.5\u201320 (metric or inch), left or right hand. Quieter, stronger, and longer-lasting than spur gears.<\/p>\n      <div class=\"hxc-hbtns\">\n        <a href=\"#hxc-cta\" class=\"hxc-btn hxc-p\">Get Instant Quote <span class=\"hxc-ar\">\u2192<\/span><\/a>\n        <a href=\"#hxc-gal\" class=\"hxc-btn hxc-o\">View Our Work<\/a>\n      <\/div>\n      <div class=\"hxc-chips\">\n        <span class=\"hxc-chip\"><span class=\"hxc-ck\">\u2713<\/span> ISO 9001:2015<\/span>\n        <span class=\"hxc-chip\"><span class=\"hxc-ck\">\u2713<\/span> MOQ 1 pc<\/span>\n        <span class=\"hxc-chip\"><span class=\"hxc-ck\">\u2713<\/span> 48h Quote<\/span>\n        <span class=\"hxc-chip\"><span class=\"hxc-ck\">\u2713<\/span> DIN 4\u201311<\/span>\n        <span class=\"hxc-chip\"><span class=\"hxc-ck\">\u2713<\/span> Left &amp; Right Hand<\/span>\n      <\/div>\n    <\/div>\n    <div class=\"hxc-hr\">\n      <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Helical-Gear.webp\"\n           onerror=\"this.src='https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Helical-Gear.webp'\"\n           alt=\"Precision CNC machined helical gears for gearbox and reducer\">\n      <div class=\"hxc-sb\">\n        <div class=\"hxc-sc\"><div class=\"hxc-sv\">\u00b10.005mm<\/div><div class=\"hxc-sl\">Profile tolerance<\/div><\/div>\n        <div class=\"hxc-sc\"><div class=\"hxc-sv\">5\u00b0\u201345\u00b0<\/div><div class=\"hxc-sl\">Helix angle range<\/div><\/div>\n        <div class=\"hxc-sc\"><div class=\"hxc-sv\">M 0.5\u201320<\/div><div class=\"hxc-sl\">Module range<\/div><\/div>\n        <div class=\"hxc-sc\"><div class=\"hxc-sv\">DIN 4\u201311<\/div><div class=\"hxc-sl\">Quality grade<\/div><\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<!-- \u2550\u2550\u2550 STATS \u2550\u2550\u2550 -->\n<div class=\"hxc-stats\">\n  <div class=\"hxc-sg\">\n    <div class=\"hxc-st\"><div class=\"hxc-sn\">\u00b10.005mm<\/div><div class=\"hxc-sl2\">Profile Tolerance<br>DIN grade 5 achievable<\/div><\/div>\n    <div class=\"hxc-st\"><div class=\"hxc-sn\">5\u00b0\u201345\u00b0<\/div><div class=\"hxc-sl2\">Helix Angle Range<br>left &amp; right hand available<\/div><\/div>\n    <div class=\"hxc-st\"><div class=\"hxc-sn\">30% Quieter<\/div><div class=\"hxc-sl2\">vs Spur Gears<br>gradual tooth engagement<\/div><\/div>\n    <div class=\"hxc-st\"><div class=\"hxc-sn\">1\u201350,000<\/div><div class=\"hxc-sl2\">Order Quantity<br>prototype to mass production<\/div><\/div>\n  <\/div>\n<\/div>\n\n<!-- \u2550\u2550\u2550 GALLERY \u2550\u2550\u2550 -->\n<div class=\"hxc-s-cd\" id=\"hxc-gal\">\n  <div class=\"hxc-inner\">\n    <div class=\"hxc-gh\">\n      <div>\n        <span class=\"hxc-ey\">Our Work<\/span>\n        <h2 class=\"hxc-h2\">Helical Gears We've Made<\/h2>\n        <p class=\"hxc-sub\">Real custom helical gear orders \u2014 single helical, double helical, helical pinion shafts, helical rack and pinion, and inline helical gear reducers \u2014 shipped to customers worldwide.<\/p>\n      <\/div>\n      <a href=\"#hxc-cta\" class=\"hxc-btn hxc-o\" style=\"flex-shrink:0\">Request Similar Part <span class=\"hxc-ar\">\u2192<\/span><\/a>\n    <\/div>\n    <div class=\"hxc-gg\">\n      <div class=\"hxc-gc hxc-a\">\n        <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Carbon-Steel-Gears.jpg\" alt=\"20CrMnTi helical gear set gearbox CNC hobbed and ground\">\n      <\/div>\n      <div class=\"hxc-gc hxc-b\">\n        <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/90-degree-helical-gears-wholesale-scaled.jpg\" alt=\"double helical herringbone gear precision machined\">\n      <\/div>\n      <div class=\"hxc-gc hxc-c\">\n        <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/helical-gear-motor.jpg\" alt=\"brass helical gear low noise precision instrument\">\n      <\/div>\n      <div class=\"hxc-gc hxc-d\">\n        <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/90-degree-helical-gears-wholesale-scaled.jpg\" alt=\"stainless helical gear pump food grade SUS316\">\n      <\/div>\n      <div class=\"hxc-gc hxc-e\">\n        <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/helical-gear-manufacturer.jpg\" alt=\"helical gear rack and pinion precision CNC machined\">\n      <\/div>\n      <div class=\"hxc-gc hxc-f\">\n        <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/helical-gear-factory.jpg\" alt=\"aluminum helical gear lightweight aerospace actuator\">\n      <\/div>\n      <div class=\"hxc-gc hxc-gg7\">\n        <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/custom-helical-gears-scaled.jpg\" alt=\"machined plastic helical gears POM nylon automation robotics\">\n      <\/div>\n      <div class=\"hxc-gc hxc-gg8\">\n        <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/helical-gear-pump.jpg\" alt=\"industrial helical gear hobbing grinding alloy steel\">\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<!-- \u2550\u2550\u2550 TYPES (NEW) \u2550\u2550\u2550 -->\n<style>\n.hxc-tyg{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:8px}\n.hxc-tyc{background:#fff;border:0.5px solid var(--border,#e4e8ec);border-radius:8px;overflow:hidden;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}\n.hxc-tyc:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(31,78,121,0.08)}\n.hxc-tyi{position:relative;aspect-ratio:16\/10;background:#f5f7f9;overflow:hidden}\n.hxc-tyi img{width:100%;height:100%;object-fit:cover;display:block}\n.hxc-tyb{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}\n.hxc-tyt{font-family:var(--bd,inherit);font-size:14px;font-weight:600;color:var(--text,#1c242c);margin-bottom:8px;line-height:1.35}\n.hxc-tyd{font-size:12.5px;color:var(--muted,#6a7682);line-height:1.65;margin-bottom:14px;flex:1}\n.hxc-tytg{display:flex;flex-wrap:wrap;gap:6px}\n.hxc-tytg span{display:inline-block;padding:3px 9px;background:#f0f4f8;color:#1F4E79;font-size:10.5px;font-weight:500;border-radius:3px;letter-spacing:0.02em}\n@media(max-width:1024px){.hxc-tyg{grid-template-columns:repeat(3,1fr)}}\n@media(max-width:768px){.hxc-tyg{grid-template-columns:repeat(2,1fr);gap:14px}.hxc-tyb{padding:14px 14px 16px}}\n@media(max-width:480px){.hxc-tyg{grid-template-columns:1fr}}\n<\/style>\n\n<div class=\"hxc-s-sf\" id=\"hxc-types\">\n  <div class=\"hxc-inner\">\n    <span class=\"hxc-ey\">Configurations<\/span>\n    <h2 class=\"hxc-h2\">Helical Gear Types We Manufacture<\/h2>\n    <p class=\"hxc-sub\" style=\"margin-bottom:32px\">Single, double helical, internal ring, pinion shafts, crossed, racks, sector \u2014 any helical gear configuration your design calls for, in any quantity from a single prototype to 50,000-piece wholesale production.<\/p>\n\n    <div class=\"hxc-tyg\">\n\n      <div class=\"hxc-tyc\">\n        <div class=\"hxc-tyi\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Carbon-Steel-Gears.jpg\" alt=\"single helical gear external standard\"><\/div>\n        <div class=\"hxc-tyb\">\n          <div class=\"hxc-tyt\">Single Helical Gears<\/div>\n          <div class=\"hxc-tyd\">The standard external helical gear \u2014 teeth cut at a single helix angle (typically 15\u00b0\u201325\u00b0). The default for inline helical gear reducers, automotive transmissions, and most industrial drives. Left or right hand on request.<\/div>\n          <div class=\"hxc-tytg\"><span>External<\/span><span>LH \/ RH<\/span><\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"hxc-tyc\">\n        <div class=\"hxc-tyi\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/90-degree-helical-gears-wholesale-scaled.jpg\" alt=\"double helical herringbone gear manufacturer\"><\/div>\n        <div class=\"hxc-tyb\">\n          <div class=\"hxc-tyt\">Double Helical (Herringbone) Gears<\/div>\n          <div class=\"hxc-tyd\">Two opposing helices on one blank \u2014 axial thrusts cancel completely, no thrust bearings needed. The premium choice for high-power compressor drives, marine propulsion, and heavy industrial reducers. Customized double helical gears in any module.<\/div>\n          <div class=\"hxc-tytg\"><span>Zero Thrust<\/span><span>Heavy Power<\/span><\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"hxc-tyc\">\n        <div class=\"hxc-tyi\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/helical-gear-pump.jpg\" alt=\"internal helical gear ring annular planetary\"><\/div>\n        <div class=\"hxc-tyb\">\n          <div class=\"hxc-tyt\">Internal Helical &amp; Ring Gears<\/div>\n          <div class=\"hxc-tyd\">Helical teeth cut on the inside of a ring \u2014 essential for compact planetary gearboxes, integrated wheel hubs, and high-ratio inline helical gear reducers. Manufactured by gear shaping, broaching, or wire EDM in any helix angle.<\/div>\n          <div class=\"hxc-tytg\"><span>Ring \/ Annular<\/span><span>Planetary<\/span><\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"hxc-tyc\">\n        <div class=\"hxc-tyi\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/helical-gear-motor.jpg\" alt=\"helical pinion gear shaft precision manufacturer\"><\/div>\n        <div class=\"hxc-tyb\">\n          <div class=\"hxc-tyt\">Helical Pinion Gears &amp; Gear Shafts<\/div>\n          <div class=\"hxc-tyd\">Helical pinions and precision helical gear shafts machined as a single part for maximum concentricity (TIR \u2264 0.008 mm). Standard for helical gear motors, helical geared motors, and high-torque servo drives.<\/div>\n          <div class=\"hxc-tytg\"><span>Integrated Shaft<\/span><span>Concentric<\/span><\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"hxc-tyc\">\n        <div class=\"hxc-tyi\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/helical-gear-factory.jpg\" alt=\"crossed helical gear 90 degree non-parallel shafts\"><\/div>\n        <div class=\"hxc-tyb\">\n          <div class=\"hxc-tyt\">Crossed Helical Gears<\/div>\n          <div class=\"hxc-tyd\">Motion transmission between non-parallel, non-intersecting shafts \u2014 typically at 90\u00b0. Both gears use the same hand; shaft angle equals the sum of helix angles. Used in valve drives, distributor shafts, and instrumentation.<\/div>\n          <div class=\"hxc-tytg\"><span>90\u00b0 Shafts<\/span><span>Non-Parallel<\/span><\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"hxc-tyc\">\n        <div class=\"hxc-tyi\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/helical-gear-manufacturer.jpg\" alt=\"helical gear rack and pinion linear motion\"><\/div>\n        <div class=\"hxc-tyb\">\n          <div class=\"hxc-tyt\">Helical Rack &amp; Pinion Sets<\/div>\n          <div class=\"hxc-tyd\">Helical gear racks paired with matching helical pinions for high-load, low-noise linear motion. Significantly quieter than spur rack-and-pinion at high speeds. Standard for CNC machine tool axes, gantries, and lifting tables. Metric and inch.<\/div>\n          <div class=\"hxc-tytg\"><span>Linear Motion<\/span><span>CNC Drives<\/span><\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"hxc-tyc\">\n        <div class=\"hxc-tyi\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/custom-helical-gears-scaled.jpg\" alt=\"helical sector gear partial arc valve throttle\"><\/div>\n        <div class=\"hxc-tyb\">\n          <div class=\"hxc-tyt\">Helical Sector Gears<\/div>\n          <div class=\"hxc-tyd\">Partial-arc helical gears for limited-rotation applications \u2014 throttle controls, valve actuators, automotive steering quadrants, and indexing mechanisms. Same precision as full helical gears, machined only over the working arc.<\/div>\n          <div class=\"hxc-tytg\"><span>Partial Arc<\/span><span>Valve \/ Throttle<\/span><\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"hxc-tyc\">\n        <div class=\"hxc-tyi\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/helical-gear-pump.jpg\" alt=\"miniature small large diameter helical gears full size range\"><\/div>\n        <div class=\"hxc-tyb\">\n          <div class=\"hxc-tyt\">Miniature, Small &amp; Large Helical Gears<\/div>\n          <div class=\"hxc-tyd\">From miniature helical gears (M 0.3, sub-10 mm OD) for medical and optical instruments, to large diameter helical gears (OD up to 600 mm) for wind-power and heavy industrial drives. Full range in steel, brass, stainless, aluminum, and plastic.<\/div>\n          <div class=\"hxc-tytg\"><span>M 0.3\u201320<\/span><span>OD \u2264 600mm<\/span><\/div>\n        <\/div>\n      <\/div>\n\n    <\/div>\n  <\/div>\n<\/div>\n\n<!-- \u2550\u2550\u2550 CAPABILITIES \u2550\u2550\u2550 -->\n<div class=\"hxc-s\" id=\"hxc-cap\">\n  <div class=\"hxc-inner\">\n    <span class=\"hxc-ey\">Technical Specs<\/span>\n    <h2 class=\"hxc-h2\">Helical Gear Machining Capabilities<\/h2>\n    <p class=\"hxc-sub\" style=\"margin-bottom:36px\">From high-volume CNC helical gear hobbing to ultra-precision profile grinding \u2014 we cover single helical, double helical, crossed helical, and helical rack-and-pinion. CNC milling helical gear options available for short-run and custom geometries.<\/p>\n    <div class=\"hxc-cw\">\n      <div class=\"hxc-csb\">\n        <div class=\"hxc-ct on\" onclick=\"hxcCap(this,'hxc-c1')\"><div class=\"hxc-ci\">\u2699\ufe0f<\/div><div><div style=\"font-size:13px;font-weight:500\">Helical Hobbing<\/div><div style=\"font-size:11px;color:var(--muted);margin-top:1px\">High-volume production<\/div><\/div><\/div>\n        <div class=\"hxc-ct\" onclick=\"hxcCap(this,'hxc-c2')\"><div class=\"hxc-ci\">\ud83d\udd2c<\/div><div><div style=\"font-size:13px;font-weight:500\">Profile Grinding<\/div><div style=\"font-size:11px;color:var(--muted);margin-top:1px\">DIN 4\u20135 precision<\/div><\/div><\/div>\n        <div class=\"hxc-ct\" onclick=\"hxcCap(this,'hxc-c3')\"><div class=\"hxc-ci\">\ud83c\udfed<\/div><div><div style=\"font-size:13px;font-weight:500\">5-Axis Milling<\/div><div style=\"font-size:11px;color:var(--muted);margin-top:1px\">Double helical &amp; custom<\/div><\/div><\/div>\n        <div class=\"hxc-ct\" onclick=\"hxcCap(this,'hxc-c4')\"><div class=\"hxc-ci\">\ud83d\udcd0<\/div><div><div style=\"font-size:13px;font-weight:500\">Helical Rack Milling<\/div><div style=\"font-size:11px;color:var(--muted);margin-top:1px\">Rack &amp; pinion sets<\/div><\/div><\/div>\n      <\/div>\n      <div class=\"hxc-cb on\" id=\"hxc-c1\">\n        <div class=\"hxc-ctx\">\n          <div class=\"hxc-cttl\">CNC Helical Gear Hobbing<\/div>\n          <div class=\"hxc-cdesc\">CNC hobbing centres use angled hob heads to generate precise helical (helical-cut) tooth forms in a single pass. The most economical method for metric helical gears, standard helical gears, and high-volume helical gear sets where wholesale pricing matters. Consistent helix angle accuracy across batches up to 50,000 pcs.<\/div>\n          <table class=\"hxc-tbl\">\n            <tr><td>Module range<\/td><td>0.8 \u2013 16 mm<\/td><\/tr>\n            <tr><td>Helix angle<\/td><td>5\u00b0 \u2013 45\u00b0 (left or right hand)<\/td><\/tr>\n            <tr><td>Max OD<\/td><td>600 mm<\/td><\/tr>\n            <tr><td>Max face width<\/td><td>300 mm<\/td><\/tr>\n            <tr><td>Quality grade<\/td><td>DIN 7\u20139 <span class=\"hxc-hi\">standard<\/span><\/td><\/tr>\n            <tr><td>Profile tolerance<\/td><td>\u00b10.012 mm<\/td><\/tr>\n            <tr><td>Typical quantity<\/td><td>100 \u2013 50,000 pcs<\/td><\/tr>\n            <tr><td>Lead time<\/td><td>7 \u2013 14 days<\/td><\/tr>\n          <\/table>\n        <\/div>\n      <\/div>\n      <div class=\"hxc-cb\" id=\"hxc-c2\">\n        <div class=\"hxc-ctx\">\n          <div class=\"hxc-cttl\">Helical Gear Profile Grinding<\/div>\n          <div class=\"hxc-cdesc\">Post-hobbing or post-hardening profile grinding for precision ground helical gears used in helical gear reducers, inline helical gear reducers, and helical gear motors. Achieves DIN 4\u20135 and Ra \u2264 0.4 \u00b5m on helical tooth flanks \u2014 the gold standard for ground helical gears in aerospace and high-torque drives.<\/div>\n          <table class=\"hxc-tbl\">\n            <tr><td>Module range<\/td><td>0.5 \u2013 10 mm<\/td><\/tr>\n            <tr><td>Helix angle<\/td><td>5\u00b0 \u2013 40\u00b0<\/td><\/tr>\n            <tr><td>Max OD<\/td><td>320 mm<\/td><\/tr>\n            <tr><td>Quality grade<\/td><td>DIN 4\u20136 <span class=\"hxc-hi\">precision<\/span><\/td><\/tr>\n            <tr><td>Profile tolerance<\/td><td>\u00b10.005 mm<\/td><\/tr>\n            <tr><td>Surface finish Ra<\/td><td>0.2 \u2013 0.8 \u00b5m<\/td><\/tr>\n            <tr><td>Post heat treatment<\/td><td>Yes \u2014 hardened gear grinding<\/td><\/tr>\n            <tr><td>Lead time<\/td><td>10 \u2013 18 days<\/td><\/tr>\n          <\/table>\n        <\/div>\n      <\/div>\n      <div class=\"hxc-cb\" id=\"hxc-c3\">\n        <div class=\"hxc-ctx\">\n          <div class=\"hxc-cttl\">5-Axis CNC Helical Gear Cutting \u2014 Double Helical &amp; Custom<\/div>\n          <div class=\"hxc-cdesc\">5-axis CNC milling for double helical gears (herringbone), crossed helical gears, internal helical gears, custom helix angles, and helical sector gears. All features \u2014 bores, keyways, flanges \u2014 completed in one setup for maximum concentricity. The fastest path from drawing to first article for custom helical gear manufacturing.<\/div>\n          <table class=\"hxc-tbl\">\n            <tr><td>Module range<\/td><td>1 \u2013 20 mm<\/td><\/tr>\n            <tr><td>Helix angle<\/td><td>Any angle, left or right<\/td><\/tr>\n            <tr><td>Max OD<\/td><td>500 mm<\/td><\/tr>\n            <tr><td>Double helical<\/td><td>Yes \u2014 herringbone profile<\/td><\/tr>\n            <tr><td>Internal helical<\/td><td>Yes<\/td><\/tr>\n            <tr><td>MOQ<\/td><td>1 pc<\/td><\/tr>\n            <tr><td>Lead time (proto)<\/td><td>5 \u2013 10 days<\/td><\/tr>\n            <tr><td>Materials<\/td><td>All metals + plastics<\/td><\/tr>\n          <\/table>\n        <\/div>\n      <\/div>\n      <div class=\"hxc-cb\" id=\"hxc-c4\">\n        <div class=\"hxc-ctx\">\n          <div class=\"hxc-cttl\">Helical Gear Rack Milling<\/div>\n          <div class=\"hxc-cdesc\">Precision helical gear racks and matching helical pinions for rack-and-pinion drives. Racks are machined from flat or round bar stock, hardened, and ground to match your helical pinion helix angle exactly. Inch and metric helical gear racks available.<\/div>\n          <table class=\"hxc-tbl\">\n            <tr><td>Module range<\/td><td>1 \u2013 12 mm<\/td><\/tr>\n            <tr><td>Helix angle<\/td><td>14.5\u00b0 \u2013 25\u00b0 standard<\/td><\/tr>\n            <tr><td>Max rack length<\/td><td>2,000 mm (spliced)<\/td><\/tr>\n            <tr><td>Accuracy<\/td><td>DIN 7 \u2013 DIN 9<\/td><\/tr>\n            <tr><td>Rack material<\/td><td>C45, 42CrMo4, SUS304<\/td><\/tr>\n            <tr><td>Matched pinion<\/td><td>Yes \u2014 supplied as a set<\/td><\/tr>\n            <tr><td>Lead time<\/td><td>10 \u2013 16 days<\/td><\/tr>\n            <tr><td>Surface treatment<\/td><td>Black oxide, zinc, induction hardened<\/td><\/tr>\n          <\/table>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<!-- \u2550\u2550\u2550 MATERIALS \u2550\u2550\u2550 -->\n<div class=\"hxc-s-sf\">\n  <div class=\"hxc-inner\">\n    <span class=\"hxc-ey\">Materials<\/span>\n    <h2 class=\"hxc-h2\">50+ Certified Materials<\/h2>\n    <p class=\"hxc-sub\" style=\"margin-bottom:28px\">Full mill certificates and spectral analysis on every batch \u2014 steel, stainless, brass, bronze, aluminum, and engineering plastics.<\/p>\n    <div class=\"hxc-mts\">\n      <div class=\"hxc-mtt on\" onclick=\"hxcMat(this,'hxc-met')\">Metals<\/div>\n      <div class=\"hxc-mtt\" onclick=\"hxcMat(this,'hxc-pla')\">Engineering Plastics<\/div>\n    <\/div>\n    <div id=\"hxc-met\" class=\"hxc-mg\">\n      <div class=\"hxc-mc\"><div class=\"hxc-mci\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Passivation-Stainless-Steel-scaled.webp\" alt=\"20CrMnTi hardened steel helical gear\"><\/div><div class=\"hxc-mif\"><div class=\"hxc-mn\">20CrMnTi Steel<\/div><div class=\"hxc-mp\">Case-hardened, HRC 58\u201362 surface. The default steel helical gear material for automotive transmissions and hardened heavy-duty drives.<\/div><div class=\"hxc-mtgs\"><span class=\"hxc-mtg\">High Load<\/span><span class=\"hxc-mtg\">Hardened<\/span><span class=\"hxc-mtg\">Automotive<\/span><\/div><\/div><\/div>\n      <div class=\"hxc-mc\"><div class=\"hxc-mci\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Alloy-Steel-CNC.jpg\" alt=\"42CrMo4 carbon steel alloy helical gear\"><\/div><div class=\"hxc-mif\"><div class=\"hxc-mn\">42CrMo4 Carbon Alloy Steel<\/div><div class=\"hxc-mp\">Through-hardened, excellent fatigue resistance. Standard carbon steel helical gears for industrial helical gear shafts and heavy reducers.<\/div><div class=\"hxc-mtgs\"><span class=\"hxc-mtg\">Heavy Duty<\/span><span class=\"hxc-mtg\">Industrial<\/span><\/div><\/div><\/div>\n      <div class=\"hxc-mc\"><div class=\"hxc-mci\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/aluminum-spur-gears-factories-scaled.webp\" alt=\"aluminum 6061 7075 helical gear aerospace\"><\/div><div class=\"hxc-mif\"><div class=\"hxc-mn\">Al 6061-T6 \/ 7075<\/div><div class=\"hxc-mp\">Lightweight aluminum helical gears, anodizable. Aerospace actuators, robotic servo gearheads, and precision miniature instruments.<\/div><div class=\"hxc-mtgs\"><span class=\"hxc-mtg\">Lightweight<\/span><span class=\"hxc-mtg\">Anodizable<\/span><\/div><\/div><\/div>\n      <div class=\"hxc-mc\"><div class=\"hxc-mci\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Brass-Nuts.jpg\" alt=\"C36000 brass helical gear low noise\"><\/div><div class=\"hxc-mif\"><div class=\"hxc-mn\">C36000 Brass<\/div><div class=\"hxc-mp\">Free-machining brass helical gears, low-noise operation. Ideal for small helical gears in clocks, instruments, and quiet drives.<\/div><div class=\"hxc-mtgs\"><span class=\"hxc-mtg\">Low Noise<\/span><span class=\"hxc-mtg\">Corrosion-Res.<\/span><\/div><\/div><\/div>\n      <div class=\"hxc-mc\"><div class=\"hxc-mci\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Brass-Nuts.jpg\" alt=\"phosphor bronze helical gears worm wheel\"><\/div><div class=\"hxc-mif\"><div class=\"hxc-mn\">Phosphor Bronze<\/div><div class=\"hxc-mp\">Self-lubricating against steel mate. Bronze helical gears excel as worm-wheel companions and in slow-speed power transmission.<\/div><div class=\"hxc-mtgs\"><span class=\"hxc-mtg\">Self-Lubricating<\/span><span class=\"hxc-mtg\">Wear-Res.<\/span><\/div><\/div><\/div>\n      <div class=\"hxc-mc\"><div class=\"hxc-mci\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Martensitic-Stainless-Steel-420.jpg\" alt=\"SUS304 316L stainless steel helical gears\"><\/div><div class=\"hxc-mif\"><div class=\"hxc-mn\">SUS304 \/ 316L Stainless<\/div><div class=\"hxc-mp\">Customized stainless steel helical gears \u2014 food-grade and medical-grade. Sterilizable, fully corrosion-resistant.<\/div><div class=\"hxc-mtgs\"><span class=\"hxc-mtg\">Food Grade<\/span><span class=\"hxc-mtg\">Medical<\/span><\/div><\/div><\/div>\n    <\/div>\n    <div id=\"hxc-pla\" class=\"hxc-mg\" style=\"display:none\">\n      <div class=\"hxc-mc\"><div class=\"hxc-mci\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/POM-Plastic-Gears.webp\" alt=\"POM Delrin plastic helical gear\"><\/div><div class=\"hxc-mif\"><div class=\"hxc-mn\">POM (Delrin)<\/div><div class=\"hxc-mp\">Self-lubricating plastic helical gears, low friction, often run dry. The default for quiet automation drives.<\/div><div class=\"hxc-mtgs\"><span class=\"hxc-mtg\">Self-lubricated<\/span><span class=\"hxc-mtg\">Low Noise<\/span><\/div><\/div><\/div>\n      <div class=\"hxc-mc\"><div class=\"hxc-mci\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Nylon-Gears.webp\" alt=\"nylon PA66 helical gear CNC machined\"><\/div><div class=\"hxc-mif\"><div class=\"hxc-mn\">Nylon PA66-GF30<\/div><div class=\"hxc-mp\">30% glass-filled nylon helical gears for higher load capacity. Machined plastic helical gears with full tooth precision.<\/div><div class=\"hxc-mtgs\"><span class=\"hxc-mtg\">High Strength<\/span><span class=\"hxc-mtg\">Lightweight<\/span><\/div><\/div><\/div>\n      <div class=\"hxc-mc\"><div class=\"hxc-mci\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/peek.jpg\" alt=\"PEEK miniature helical gear high temp\"><\/div><div class=\"hxc-mif\"><div class=\"hxc-mn\">PEEK<\/div><div class=\"hxc-mp\">Chemical-resistant PEEK helical gears, rated to 260\u00b0C. Sterilizable miniature helical gears for surgical and lab instruments.<\/div><div class=\"hxc-mtgs\"><span class=\"hxc-mtg\">High Temp<\/span><span class=\"hxc-mtg\">Chemical Res.<\/span><\/div><\/div><\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<!-- \u2550\u2550\u2550 SPECIFICATIONS (NEW) \u2550\u2550\u2550 -->\n<style>\n.hxc-spg{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:8px}\n.hxc-spc{background:#fff;border:0.5px solid var(--border,#e4e8ec);border-radius:8px;padding:24px 26px}\n.hxc-spt{font-family:var(--bd,inherit);font-size:14px;font-weight:600;color:var(--primary,#1F4E79);margin-bottom:12px;display:flex;align-items:center;gap:8px}\n.hxc-spi{width:22px;height:22px;border-radius:4px;background:#f0f4f8;display:inline-flex;align-items:center;justify-content:center;font-size:12px;line-height:1}\n.hxc-spd{font-size:12.5px;color:var(--muted,#6a7682);line-height:1.75;margin-bottom:14px}\n.hxc-spd strong{color:var(--text,#1c242c);font-weight:500}\n.hxc-sptbl{width:100%;border-collapse:collapse;font-size:12px;margin-bottom:4px}\n.hxc-sptbl th{background:#f5f7f9;text-align:left;padding:7px 10px;font-weight:500;color:var(--text,#1c242c);border-bottom:0.5px solid var(--border,#e4e8ec)}\n.hxc-sptbl td{padding:7px 10px;border-bottom:0.5px solid var(--border,#e4e8ec);color:var(--muted,#6a7682);vertical-align:top}\n.hxc-sptbl tr:last-child td{border-bottom:none}\n.hxc-sptbl td strong{color:var(--text,#1c242c);font-weight:500}\n.hxc-spform{font-family:'Courier New',monospace;font-size:13px;background:#f5f7f9;border-left:3px solid #1F4E79;padding:10px 14px;margin:8px 0 12px;border-radius:0 4px 4px 0;color:var(--text,#1c242c)}\n@media(max-width:768px){.hxc-spg{grid-template-columns:1fr;gap:16px}.hxc-spc{padding:20px 22px}}\n<\/style>\n\n<div class=\"hxc-s\" id=\"hxc-specs\">\n  <div class=\"hxc-inner\">\n    <span class=\"hxc-ey\">Reference<\/span>\n    <h2 class=\"hxc-h2\">Helical Gear Standard Specifications<\/h2>\n    <p class=\"hxc-sub\" style=\"margin-bottom:32px\">Module, helix angle, pressure angle, tolerance \u2014 the standard helical gear dimensions and specifications every drawing should define. A working reference for engineers preparing CAD, RFQs, and helical gear quotations.<\/p>\n\n    <div class=\"hxc-spg\">\n\n      <div class=\"hxc-spc\">\n        <div class=\"hxc-spt\"><span class=\"hxc-spi\">\ud83d\udccf<\/span>Standard Helical Gear Modules (Metric)<\/div>\n        <div class=\"hxc-spd\">Per <strong>ISO 54 \/ DIN 780<\/strong>, the same standard module series applies to helical gears as to spur gears \u2014 but for helical gears it always refers to the <strong>normal module (m\u2099)<\/strong>, measured perpendicular to the tooth flank, not the transverse module:<\/div>\n        <table class=\"hxc-sptbl\">\n          <tr><th>Series I (preferred)<\/th><th>Series II<\/th><th>Typical Use<\/th><\/tr>\n          <tr><td><strong>0.5, 0.8, 1, 1.25, 1.5<\/strong><\/td><td>0.55, 0.7, 0.9, 1.125, 1.375<\/td><td>Miniature helical gears, instruments<\/td><\/tr>\n          <tr><td><strong>2, 2.5, 3, 4, 5<\/strong><\/td><td>1.75, 2.25, 2.75, 3.5, 4.5<\/td><td>Industrial helical gears, automotive<\/td><\/tr>\n          <tr><td><strong>6, 8, 10, 12, 16, 20<\/strong><\/td><td>5.5, 7, 9, 11, 14, 18<\/td><td>Heavy reducers, large diameter helical gears<\/td><\/tr>\n        <\/table>\n      <\/div>\n\n      <div class=\"hxc-spc\">\n        <div class=\"hxc-spt\"><span class=\"hxc-spi\">\u2295<\/span>Diametral Pitch (Inch System)<\/div>\n        <div class=\"hxc-spd\">For inch helical gears, <strong>normal diametral pitch (P\u2099)<\/strong> defines tooth size \u2014 the number of teeth per inch measured along the normal plane:<\/div>\n        <table class=\"hxc-sptbl\">\n          <tr><th>DP (normal)<\/th><th>Module mn (mm)<\/th><th>Typical Use<\/th><\/tr>\n          <tr><td>20, 24, 32, 48<\/td><td>1.27 \u2192 0.53<\/td><td>Instruments, model drives<\/td><\/tr>\n          <tr><td>10, 12, 16<\/td><td>2.54 \u2192 1.59<\/td><td>Robotics, small machines<\/td><\/tr>\n          <tr><td>5, 6, 8<\/td><td>5.08 \u2192 3.18<\/td><td>Industrial helical gearboxes<\/td><\/tr>\n          <tr><td>2, 2.5, 3, 4<\/td><td>12.7 \u2192 6.35<\/td><td>Heavy industrial reducers<\/td><\/tr>\n        <\/table>\n      <\/div>\n\n      <div class=\"hxc-spc\">\n        <div class=\"hxc-spt\"><span class=\"hxc-spi\">\u2220<\/span>Helix Angle &amp; Pressure Angle<\/div>\n        <div class=\"hxc-spd\">The <strong>helix angle (\u03b2)<\/strong> is the defining parameter of a helical gear. Standard ranges and typical applications:<\/div>\n        <table class=\"hxc-sptbl\">\n          <tr><th>Helix Angle \u03b2<\/th><th>Use Case<\/th><th>Trade-off<\/th><\/tr>\n          <tr><td>5\u00b0 \u2013 10\u00b0<\/td><td>Low-thrust drives<\/td><td>Modest noise gain over spur<\/td><\/tr>\n          <tr><td><strong>15\u00b0 \u2013 25\u00b0<\/strong><\/td><td>Industrial \/ automotive<\/td><td>Optimal balance \u2014 default range<\/td><\/tr>\n          <tr><td>30\u00b0 \u2013 40\u00b0<\/td><td>High-speed turbines<\/td><td>Needs thrust bearings or double helical<\/td><\/tr>\n          <tr><td>45\u00b0<\/td><td>Maximum smoothness<\/td><td>Very high axial thrust<\/td><\/tr>\n        <\/table>\n        <div class=\"hxc-spd\" style=\"margin-top:10px;margin-bottom:0\"><strong>Pressure angle:<\/strong> 20\u00b0 normal is the global standard; 14.5\u00b0 appears in legacy designs; 25\u00b0 for high-load applications.<\/div>\n      <\/div>\n\n      <div class=\"hxc-spc\">\n        <div class=\"hxc-spt\"><span class=\"hxc-spi\">\u0192<\/span>Key Helical Gear Formulas<\/div>\n        <div class=\"hxc-spd\"><strong>Normal vs transverse module<\/strong> \u2014 unique to helical gears:<\/div>\n        <div class=\"hxc-spform\">m\u209c = m\u2099 \/ cos(\u03b2) &nbsp;\u00b7&nbsp; pitch dia. d = m\u2099 \u00d7 z \/ cos(\u03b2)<\/div>\n        <div class=\"hxc-spd\"><strong>Centre distance<\/strong> for two meshing helical gears (same hand opposite, equal helix):<\/div>\n        <div class=\"hxc-spform\">a = m\u2099 \u00d7 (z\u2081 + z\u2082) \/ (2 \u00d7 cos \u03b2)<\/div>\n        <div class=\"hxc-spd\"><strong>Virtual tooth count<\/strong> z<sub>v<\/sub> = z \/ cos\u00b3(\u03b2) \u2014 used for strength calculation and undercut check. <strong>Axial thrust:<\/strong> F<sub>a<\/sub> = F<sub>t<\/sub> \u00d7 tan(\u03b2).<\/div>\n      <\/div>\n\n      <div class=\"hxc-spc\">\n        <div class=\"hxc-spt\"><span class=\"hxc-spi\">\u2713<\/span>DIN \/ AGMA Helical Gear Standards<\/div>\n        <div class=\"hxc-spd\">Quality class controls profile error (F<sub>f<\/sub>), helix deviation (F<sub>\u03b2<\/sub>), pitch error (F<sub>p<\/sub>), and runout. Per <strong>DIN 3961\u20133967 \/ AGMA 2015 \/ ISO 1328<\/strong>:<\/div>\n        <table class=\"hxc-sptbl\">\n          <tr><th>DIN Class<\/th><th>AGMA<\/th><th>Application<\/th><\/tr>\n          <tr><td>4 \u2013 5<\/td><td>13 \u2013 12<\/td><td>Aerospace, measurement, precision helical gears<\/td><\/tr>\n          <tr><td>6 \u2013 7<\/td><td>11 \u2013 10<\/td><td>Servo drives, robotics, helical gear motors<\/td><\/tr>\n          <tr><td>8 \u2013 9<\/td><td>9 \u2013 8<\/td><td>Industrial gearboxes, helical gear reducers (std.)<\/td><\/tr>\n          <tr><td>10 \u2013 11<\/td><td>7 \u2013 6<\/td><td>Low-speed commercial drives<\/td><\/tr>\n        <\/table>\n      <\/div>\n\n      <div class=\"hxc-spc\">\n        <div class=\"hxc-spt\"><span class=\"hxc-spi\">\ud83d\udcd0<\/span>Helical Gear Drawing Checklist<\/div>\n        <div class=\"hxc-spd\">A complete helical gear drawing must specify everything below \u2014 missing the <strong>hand<\/strong> or <strong>helix angle<\/strong> reference plane will block quoting:<\/div>\n        <table class=\"hxc-sptbl\">\n          <tr><td>\u2022 Normal module (m\u2099) or normal DP<\/td><td><strong>Required<\/strong><\/td><\/tr>\n          <tr><td>\u2022 Number of teeth (z)<\/td><td><strong>Required<\/strong><\/td><\/tr>\n          <tr><td>\u2022 <strong>Helix angle (\u03b2)<\/strong><\/td><td><strong>Required<\/strong><\/td><\/tr>\n          <tr><td>\u2022 <strong>Hand \u2014 left or right<\/strong><\/td><td><strong>Required<\/strong><\/td><\/tr>\n          <tr><td>\u2022 Normal pressure angle (default 20\u00b0)<\/td><td><strong>Required<\/strong><\/td><\/tr>\n          <tr><td>\u2022 Face width (b)<\/td><td><strong>Required<\/strong><\/td><\/tr>\n          <tr><td>\u2022 Pitch \/ outside \/ root diameter<\/td><td><strong>Required<\/strong><\/td><\/tr>\n          <tr><td>\u2022 Quality grade (DIN \/ AGMA \/ ISO)<\/td><td><strong>Required<\/strong><\/td><\/tr>\n          <tr><td>\u2022 Tooth thickness \/ backlash<\/td><td>Recommended<\/td><\/tr>\n          <tr><td>\u2022 Material, heat treatment, surface finish<\/td><td><strong>Required<\/strong><\/td><\/tr>\n        <\/table>\n      <\/div>\n\n    <\/div>\n  <\/div>\n<\/div>\n\n<!-- \u2550\u2550\u2550 CASE STUDIES \u2550\u2550\u2550 -->\n<div class=\"hxc-s-sf\" id=\"hxc-cases\">\n  <div class=\"hxc-inner\">\n    <span class=\"hxc-ey\">Case Studies<\/span>\n    <h2 class=\"hxc-h2\">Real Helical Gear Projects<\/h2>\n    <p class=\"hxc-sub\" style=\"margin-bottom:36px\">From single-piece prototypes to high-volume helical gear sets \u2014 verified results from our customers.<\/p>\n    <div class=\"hxc-casg\">\n      <div class=\"hxc-casc hxc-rv\">\n        <div class=\"hxc-casi\">\n          <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/helical-gear-pump.jpg\" alt=\"helical gear reducer inline gearbox 20CrMnTi hobbed ground\">\n          <div class=\"hxc-casl\">Industrial<\/div>\n        <\/div>\n        <div class=\"hxc-casb\">\n          <div class=\"hxc-cast\">Inline Helical Gear Reducer \u2014 Stage 1 &amp; 2<\/div>\n          <div class=\"hxc-casm\">\n            <div class=\"hxc-kv\"><div class=\"hxc-k\">Material<\/div><div class=\"hxc-v\">20CrMnTi<\/div><\/div>\n            <div class=\"hxc-kv\"><div class=\"hxc-k\">Process<\/div><div class=\"hxc-v\">Hob + Grind<\/div><\/div>\n            <div class=\"hxc-kv\"><div class=\"hxc-k\">Helix Angle<\/div><div class=\"hxc-v\">20\u00b0<\/div><\/div>\n            <div class=\"hxc-kv\"><div class=\"hxc-k\">Quantity<\/div><div class=\"hxc-v\">1,500 sets<\/div><\/div>\n          <\/div>\n          <div class=\"hxc-casr\">\u2713 DIN 6 \u00b7 Noise 8 dB lower than previous spur gear design<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"hxc-casc hxc-rv\">\n        <div class=\"hxc-casi\">\n          <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/helical-gear-manufacturer.jpg\" alt=\"double helical gear herringbone power transmission zero axial thrust\">\n          <div class=\"hxc-casl\">Power Transmission<\/div>\n        <\/div>\n        <div class=\"hxc-casb\">\n          <div class=\"hxc-cast\">Double Helical (Herringbone) Gear Pair<\/div>\n          <div class=\"hxc-casm\">\n            <div class=\"hxc-kv\"><div class=\"hxc-k\">Material<\/div><div class=\"hxc-v\">42CrMo4<\/div><\/div>\n            <div class=\"hxc-kv\"><div class=\"hxc-k\">Helix Angle<\/div><div class=\"hxc-v\">\u00b130\u00b0<\/div><\/div>\n            <div class=\"hxc-kv\"><div class=\"hxc-k\">Feature<\/div><div class=\"hxc-v\">Zero axial thrust<\/div><\/div>\n            <div class=\"hxc-kv\"><div class=\"hxc-k\">Quantity<\/div><div class=\"hxc-v\">80 pcs<\/div><\/div>\n          <\/div>\n          <div class=\"hxc-casr\">\u2713 Zero thrust bearing required \u00b7 40% higher torque vs single helical<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"hxc-casc hxc-rv\">\n        <div class=\"hxc-casi\">\n          <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/helical-gear-motor.jpg\" alt=\"helical servo gear robotic arm precision aluminum DIN 5\">\n          <div class=\"hxc-casl\">Robotics<\/div>\n        <\/div>\n        <div class=\"hxc-casb\">\n          <div class=\"hxc-cast\">Helical Servo Gear \u2014 Robotic Arm Joint<\/div>\n          <div class=\"hxc-casm\">\n            <div class=\"hxc-kv\"><div class=\"hxc-k\">Material<\/div><div class=\"hxc-v\">Al 7075-T6<\/div><\/div>\n            <div class=\"hxc-kv\"><div class=\"hxc-k\">Process<\/div><div class=\"hxc-v\">5-Axis + Anodize<\/div><\/div>\n            <div class=\"hxc-kv\"><div class=\"hxc-k\">Grade<\/div><div class=\"hxc-v\">DIN 5<\/div><\/div>\n            <div class=\"hxc-kv\"><div class=\"hxc-k\">Quantity<\/div><div class=\"hxc-v\">120 pcs<\/div><\/div>\n          <\/div>\n          <div class=\"hxc-casr\">\u2713 FAI approved 1st cycle \u00b7 backlash &lt; 0.015 mm<\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<!-- \u2550\u2550\u2550 PROCESS \u2550\u2550\u2550 -->\n<div class=\"hxc-s-sf\">\n  <div class=\"hxc-inner\">\n    <div style=\"text-align:center\">\n      <span class=\"hxc-ey\">How It Works<\/span>\n      <h2 class=\"hxc-h2\" style=\"margin:0 auto 10px\">From Drawing to Your Door<\/h2>\n      <p class=\"hxc-sub\" style=\"margin:0 auto\">Upload your helical gear drawing or CAD file \u2014 we handle DFM, process selection, and full CMM inspection from our Chinese precision machining facility.<\/p>\n    <\/div>\n    <div class=\"hxc-psg\">\n      <div class=\"hxc-ps\"><div class=\"hxc-psn\">01<\/div><div class=\"hxc-pst\">Upload CAD \/ Drawing<\/div><div class=\"hxc-psd\">DXF, DWG, STEP, IGES or PDF. Include helix angle, hand, normal module, and accuracy class.<\/div><\/div>\n      <div class=\"hxc-ps\"><div class=\"hxc-psn\">02<\/div><div class=\"hxc-pst\">Helical Gear Quote in 48 Hours<\/div><div class=\"hxc-psd\">CNC machining helical gear quotation covering process (hobbing vs grinding), material, lead time, and cost breakdown. Wholesale pricing for high-volume runs.<\/div><\/div>\n      <div class=\"hxc-ps\"><div class=\"hxc-psn\">03<\/div><div class=\"hxc-pst\">Production &amp; CMM QC<\/div><div class=\"hxc-psd\">CNC helical gear cutting with in-process Klingelnberg measurement \u2014 helix deviation, profile, pitch, and runout.<\/div><\/div>\n      <div class=\"hxc-ps\"><div class=\"hxc-psn\">04<\/div><div class=\"hxc-pst\">Ship Worldwide<\/div><div class=\"hxc-psd\">Vacuum-packed with full inspection report. DHL \/ FedEx \/ sea freight available.<\/div><\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<!-- \u2550\u2550\u2550 QUALITY \u2550\u2550\u2550 -->\n<div class=\"hxc-s\">\n  <div class=\"hxc-inner\">\n    <span class=\"hxc-ey\">Quality<\/span>\n    <h2 class=\"hxc-h2\">Zero-Defect Commitment<\/h2>\n    <p class=\"hxc-sub\" style=\"margin-bottom:36px\">Every helical gear leaving our Chinese precision machining facility passes a 4-stage inspection covering helix deviation, profile error, pitch accuracy, and surface finish.<\/p>\n    <div class=\"hxc-qg\">\n      <div>\n        <div class=\"hxc-lbl\">Certifications &amp; Equipment<\/div>\n        <div class=\"hxc-qc\"><div class=\"hxc-qci\">\u2713<\/div><div><div class=\"hxc-qcn\">ISO 9001:2015<\/div><div class=\"hxc-qcd\">Quality Management System certified \u2014 ISO helical gear manufacturing throughout<\/div><\/div><\/div>\n        <div class=\"hxc-qc\"><div class=\"hxc-qci\">\ud83d\udcd0<\/div><div><div class=\"hxc-qcn\">DIN 3961\u20133967 \/ AGMA Standards<\/div><div class=\"hxc-qcd\">AGMA helical gear standards and DIN tolerance classes 4\u201311. Helix angle deviation F\u03b2 measured on every batch.<\/div><\/div><\/div>\n        <div class=\"hxc-qc\"><div class=\"hxc-qci\">\ud83d\udd2d<\/div><div><div class=\"hxc-qcn\">Klingelnberg Gear Analyser<\/div><div class=\"hxc-qcd\">Dedicated helical gear measurement: profile, helix, pitch, runout, lead \u2014 all reported per DIN 3962.<\/div><\/div><\/div>\n        <div class=\"hxc-qc\"><div class=\"hxc-qci\">\ud83d\udcc4<\/div><div><div class=\"hxc-qcn\">Full Material Certification<\/div><div class=\"hxc-qcd\">Mill cert + spectral analysis on every material batch \u2014 critical for custom helical gear applications.<\/div><\/div><\/div>\n      <\/div>\n      <div>\n        <div class=\"hxc-lbl\">4-Stage Inspection Protocol<\/div>\n        <div class=\"hxc-qs\"><div class=\"hxc-qsn\">1<\/div><div><div class=\"hxc-qst\">Incoming Material Check<\/div><div class=\"hxc-qsd\">Spectral analyzer confirms alloy grade. No substitutions \u2014 20CrMnTi is 20CrMnTi.<\/div><\/div><\/div>\n        <div class=\"hxc-qs\"><div class=\"hxc-qsn\">2<\/div><div><div class=\"hxc-qst\">First Article Inspection<\/div><div class=\"hxc-qsd\">Full Klingelnberg + CMM measurement of first helical gear \u2014 helix angle, profile, pitch error confirmed before batch.<\/div><\/div><\/div>\n        <div class=\"hxc-qs\"><div class=\"hxc-qsn\">3<\/div><div><div class=\"hxc-qst\">In-Process Gear Measurement<\/div><div class=\"hxc-qsd\">Periodic checks during production. Helix deviation F\u03b2, profile deviation Ff, pitch error Fp \u2014 all within DIN class.<\/div><\/div><\/div>\n        <div class=\"hxc-qs\"><div class=\"hxc-qsn\">4<\/div><div><div class=\"hxc-qst\">Final Outgoing Inspection<\/div><div class=\"hxc-qsd\">100% visual + sampled gear analysis. Full helical gear measurement report shipped with every order.<\/div><\/div><\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<!-- \u2550\u2550\u2550 TESTIMONIALS \u2550\u2550\u2550 -->\n<div class=\"hxc-s\">\n  <div class=\"hxc-inner\">\n    <div style=\"text-align:center;margin-bottom:36px\">\n      <span class=\"hxc-ey\">Reviews<\/span>\n      <h2 class=\"hxc-h2\">Trusted Helical Gear Manufacturer<\/h2>\n    <\/div>\n    <div class=\"hxc-tsg\">\n      <div class=\"hxc-tsi hxc-rv\">\n        <div class=\"hxc-tss\">\u2605\u2605\u2605\u2605\u2605<\/div>\n        <div class=\"hxc-tst\">\"We switched from a local helical gear manufacturer to HXC for our gearbox helical gears. Profile grinding quality is excellent \u2014 DIN 6 consistently achieved. Helix angle deviation was within 5 \u00b5m across all 1,500 parts. Lead time 14 days.\"<\/div>\n        <div class=\"hxc-tshr\"><\/div>\n        <div class=\"hxc-tsau\"><div class=\"hxc-tsav\">TW<\/div><div><div class=\"hxc-tsnm\">Thomas W.<\/div><div class=\"hxc-tsco\">Gearbox Design Engineer \u00b7 Germany<\/div><\/div><\/div>\n      <\/div>\n      <div class=\"hxc-tsi hxc-rv\">\n        <div class=\"hxc-tss\">\u2605\u2605\u2605\u2605\u2605<\/div>\n        <div class=\"hxc-tst\">\"HXC machined a set of double helical gears for our high-power compressor drive. The herringbone geometry was challenging but they nailed it on the first article. Zero axial thrust measured \u2014 exactly as designed. Highly recommended.\"<\/div>\n        <div class=\"hxc-tshr\"><\/div>\n        <div class=\"hxc-tsau\"><div class=\"hxc-tsav\">LB<\/div><div><div class=\"hxc-tsnm\">Luca B.<\/div><div class=\"hxc-tsco\">Mechanical Engineering Lead \u00b7 Italy<\/div><\/div><\/div>\n      <\/div>\n      <div class=\"hxc-tsi hxc-rv\">\n        <div class=\"hxc-tss\">\u2605\u2605\u2605\u2605\u2605<\/div>\n        <div class=\"hxc-tst\">\"We needed custom helical gears with a 25\u00b0 helix angle in Al 7075 for our aerospace servo actuator. DIN 5, anodized, full CMM report. First article approved in one cycle. Backlash was 0.012 mm \u2014 tighter than the drawing requirement.\"<\/div>\n        <div class=\"hxc-tshr\"><\/div>\n        <div class=\"hxc-tsau\"><div class=\"hxc-tsav\">SR<\/div><div><div class=\"hxc-tsnm\">Sophie R.<\/div><div class=\"hxc-tsco\">Aerospace Procurement \u00b7 France<\/div><\/div><\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<!-- \u2550\u2550\u2550 FAQ \u2550\u2550\u2550 -->\n<div class=\"hxc-s-sf\" id=\"hxc-faq\">\n  <div class=\"hxc-inner\">\n    <span class=\"hxc-ey\">FAQ<\/span>\n    <h2 class=\"hxc-h2\">Helical Gear \u2014 Frequently Asked Questions<\/h2>\n    <p class=\"hxc-sub\" style=\"margin-bottom:40px\">Everything engineers ask about helical gears, helical gear design, and comparing helical vs spur gear or helical vs straight cut gears \u2014 answered by our team.<\/p>\n    <div class=\"hxc-faq-grid\">\n\n      <!-- Column 1 -->\n      <div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">What is a helical gear?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">A helical gear is a cylindrical gear whose teeth are cut at an angle \u2014 the <strong>helix angle<\/strong> \u2014 to the gear's rotational axis, rather than parallel as in a spur gear. This angled tooth form means multiple teeth engage simultaneously, producing a gradual, overlapping contact pattern. The result is <strong>quieter operation, higher load capacity, and smoother transmission<\/strong> compared to straight-cut spur gears, at the cost of an axial thrust force that must be handled by thrust bearings. Helical gears are the dominant gear type in automotive gearboxes, industrial gear reducers, and high-speed power transmission.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">What is an internal helical gear?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">An <strong>internal helical gear<\/strong> (also called a <strong>helical ring gear<\/strong> or annular helical gear) has helical teeth cut on the inside of a hollow ring rather than the outside of a cylinder. It meshes with an external helical pinion that sits inside the ring. The pinion and ring rotate in the same direction, allowing very compact reduction designs \u2014 which is why internal helical gears are the foundation of planetary gearboxes, integrated wheel hubs, and high-ratio inline helical gear reducers. Internal helical gears cannot be hobbed and must be manufactured by gear shaping, broaching, or wire EDM, which makes them more expensive than external helical gears but irreplaceable for compact, high-ratio systems.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">What is a helical gear used for?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">Helical gears are used wherever <strong>smooth, quiet, high-speed power transmission<\/strong> is needed between parallel shafts. Key applications include: automotive gearboxes and EPS systems; <strong>inline helical gear reducers<\/strong> for conveyors and industrial drives; <strong>helical gear motors<\/strong> and <strong>helical geared motors<\/strong>; <strong>helical gear pumps<\/strong> for hydraulic and lubrication systems; aerospace actuators; robotic servo gearheads (<strong>helical servo gears<\/strong>); and <strong>helical gear rack and pinion<\/strong> systems for machine tool linear axes. Crossed helical gears transmit motion between non-parallel, non-intersecting shafts.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">What is the difference between helical gear and bevel gear?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\"><strong>Helical gears<\/strong> transmit power between <strong>parallel shafts<\/strong> using angled teeth on a cylindrical body. <strong>Bevel gears<\/strong> \u2014 including <strong>helical bevel gears<\/strong> \u2014 transmit power between <strong>intersecting shafts<\/strong>, typically at 90\u00b0, using teeth on a conical body. A <strong>helical bevel gear<\/strong> combines both: conical body for shaft angle change plus helical (curved) teeth for smoother engagement. In gearbox terminology, a <strong>bevel helical gear reducer<\/strong> or <strong>helical bevel gear unit<\/strong> uses a bevel stage for the right-angle turn and a helical stage for the main speed reduction.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">Which is better, spur or helical gear?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">The classic <strong>helical gear vs spur gear<\/strong> (or <strong>spur gear vs helical gear<\/strong>) comparison: <strong>Helical gears are better<\/strong> for high-speed operation, low noise, high load, and smooth transmission \u2014 which is why automotive gearboxes and industrial inline helical gear reducers use them. <strong>Spur gears are better<\/strong> for simplicity, zero axial thrust, lower cost, and precise positioning at moderate speeds. For most continuous-duty power transmission at speeds above ~3 m\/s pitch velocity, choose helical. For instruments, indexing drives, and low-speed machinery, spur gears are the practical choice.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">Are straight or helical gears stronger? (straight cut vs helical gears)<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">For the same module and face width, <strong>helical gears are 20\u201340% stronger<\/strong> in bending and surface fatigue than spur (straight-cut) gears. This is because helical teeth have a longer contact line (the diagonal mesh distributes load over more tooth area) and a higher contact ratio. In the <strong>straight cut vs helical gears<\/strong> debate: helical wins on strength and noise; straight cut wins on simplicity and no axial thrust. Are straight cut gears stronger than helical? No \u2014 helical gears carry more load at the same tooth size.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">Are helical gears better?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">Helical gears are <strong>better than spur gears in most continuous-duty power transmission applications<\/strong>: quieter (the biggest advantage of helical gears over spur gears), stronger, smoother, and capable of higher speeds. The <strong>advantages of helical gears over spur gears<\/strong> also include higher contact ratio and the ability to carry more torque per unit size. However, the one disadvantage of helical gears is the axial thrust force, which requires thrust-capable bearings and adds to system cost. For low-speed, low-load, or precision indexing applications, spur gears remain the simpler and cheaper choice.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">Are helical gears expensive?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">Helical gears cost <strong>10\u201330% more than equivalent spur gears<\/strong> of the same module and material. The premium comes from: more complex hobbing setup (angled hob head), higher tooling wear due to the helical cutting path, and the need for thrust bearings in the assembly. However, for high-volume production using CNC helical gear hobbing, the per-piece cost difference narrows significantly. Custom helical gears for low volumes cost more due to setup time. At HXC, we provide competitive helical gear pricing and helical gear quotes from prototype (1 pc) to wholesale production with no tooling fee.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">Do helical gears last longer?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">Yes \u2014 helical gears typically <strong>outlast spur gears<\/strong> in comparable applications for two reasons: first, the distributed contact load reduces contact stress (Hertzian pressure) on the tooth flanks, slowing pitting fatigue; second, the gradual tooth engagement reduces dynamic loads and impact stresses that cause fatigue cracks in spur gear roots. In automotive gearboxes, the shift from spur to helical gears in the 20th century was driven partly by durability as well as noise. With proper lubrication and a correct helix angle, helical gears in good working conditions can last the lifetime of the machine.<\/div>\n        <\/div>\n      <\/div>\n\n      <!-- Column 2 -->\n      <div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">What are the disadvantages of helical gears?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">The main <strong>disadvantages of helical gears<\/strong>: <strong>(1) Axial thrust<\/strong> \u2014 the helix angle generates a force component along the shaft axis, requiring thrust bearings or a double helical (herringbone) arrangement to cancel it. <strong>(2) Higher manufacturing cost<\/strong> vs spur gears. <strong>(3) More complex design<\/strong> \u2014 helix angle, lead, and hand must all be specified and matched between mating gears. <strong>(4) Efficiency slightly lower than spur gears<\/strong> due to the sliding component in helical tooth contact (though the difference is small \u2014 typically 0.5\u20131% per mesh). The double helical gear advantages include eliminating axial thrust at the cost of even higher manufacturing complexity.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">What is the difference between left hand and right hand helical gears?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">A <strong>right hand helical gear<\/strong> has teeth that spiral up and away from the viewer in a clockwise direction (like a standard screw thread); a <strong>left hand helical gear<\/strong> spirals counter-clockwise. <strong>For external helical gears meshing on parallel shafts, one must be left hand and the other right hand<\/strong> \u2014 same hand will not mesh. For crossed helical gears (non-parallel shafts), both gears use the same hand. The hand must always be specified on the drawing alongside the helix angle. HXC supplies left and right hand helical gears as matched pairs, with hand verification on every CMM inspection report. Hand also affects the direction of axial thrust \u2014 useful when designing thrust bearing arrangements.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">Are helical gears noisy?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">Helical gears are <strong>significantly quieter than spur gears<\/strong>, especially at high speeds. The angled teeth create a gradual, overlapping engagement rather than the simultaneous full-tooth impact of spur gears. Noise increases with: helix angle accuracy errors (grind to DIN 5\u20136 for quiet operation), bearing misalignment, inadequate lubrication, and worn flanks. At very high speeds or with large helix angles, axial vibration can become a noise source. Double helical gears are quietest because the opposing helix forces cancel, eliminating axial oscillation.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">Can helical gears be back-driven?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">Yes \u2014 <strong>helical gears can be back-driven<\/strong> just like spur gears, because their tooth normal angles create low friction relative to the driving force. This distinguishes helical gears from worm gears, which are self-locking at low lead angles. The <strong>helical worm gear<\/strong> (crossed helical gear) is a special case: at very high reduction ratios and low lead angles on the worm element, it may become self-locking. Standard parallel-axis helical gear sets \u2014 in inline helical gear reducers or gearboxes \u2014 are always reversible and can be back-driven freely.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">Do helical gears need lubrication?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">Yes \u2014 <strong>steel helical gears require lubrication<\/strong> for efficient, long-lasting operation. The sliding action between helical teeth (from the helix angle) is greater than in spur gears, generating more heat. Gear oil viscosity should be selected based on pitch-line velocity, load, and operating temperature \u2014 typically ISO VG 150\u2013320 for industrial helical gear reducers. The exception is <strong>plastic helical gears<\/strong> (POM, Nylon): these are often run dry because the low-friction polymer surface and lower contact loads make lubrication unnecessary or even harmful. In miniature helical gears for instruments, a light grease application is often sufficient.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">What is the best material for helical gears?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">The best material depends on the application. For <strong>automotive and industrial helical gear reducers<\/strong>: <strong>20CrMnTi<\/strong> (case-hardened, HRC 58\u201362) is the strongest material for helical gears under high cyclic load. For <strong>heavy-duty industrial<\/strong>: <strong>42CrMo4<\/strong> through-hardened. For <strong>lightweight aerospace<\/strong>: <strong>Al 7075-T6<\/strong> or <strong>Grade 5 titanium<\/strong>. For <strong>helical gear pumps<\/strong> and food\/medical: <strong>SUS316L stainless<\/strong>. For <strong>low-noise automation<\/strong>: <strong>POM plastic helical gears<\/strong>. For high-temperature environments: <strong>PEEK miniature helical gears<\/strong>. We stock and certify all these materials with full mill certificates.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">What is the strongest gear material?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">For maximum surface and bending fatigue strength, <strong>case-hardened 20CrMnTi steel<\/strong> (carburized to 0.8\u20131.2 mm case depth, surface HRC 58\u201362, core HRC 30\u201345) is the standard choice for high-performance helical gears in automotive gearboxes. <strong>M2 tool steel<\/strong> ground to DIN 4 achieves the highest surface hardness but is more brittle. For aerospace helical gears where weight matters, <strong>Grade 5 titanium<\/strong> offers the best specific strength. For plastic helical gears, <strong>PEEK GF30<\/strong> gives the highest strength-to-weight among engineering polymers.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">What is the best angle for helical gears?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">The optimal <strong>helix angle for helical gears<\/strong> balances noise reduction, load capacity, and axial thrust. In practice: <strong>15\u00b0\u201325\u00b0 is the most common range<\/strong> for industrial and automotive gearboxes \u2014 this gives a significant improvement in contact ratio and noise over spur gears while keeping axial thrust manageable. <strong>30\u00b0\u201345\u00b0 helix angles<\/strong> (used in high-speed turbine gearboxes) maximise smoothness but require heavy-duty thrust bearings or a double helical arrangement. <strong>Standard helical gears<\/strong> from catalogue suppliers typically use 15\u00b0 or 19.5\u00b0 helix angles for interchangeability. For custom helical gears, our engineers recommend 20\u00b0 as the default unless your application demands otherwise.<\/div>\n        <\/div>\n        <div class=\"hxc-faq-item\">\n          <button class=\"hxc-faq-q\" onclick=\"hxcFaq(this)\" aria-expanded=\"false\">What is the 17-tooth rule for gears?<span class=\"hxc-faq-icon\">+<\/span><\/button>\n          <div class=\"hxc-faq-body\">The 17-tooth rule states that a <strong>standard 20\u00b0 pressure-angle spur gear needs at least 17 teeth to avoid undercutting<\/strong>. For <strong>helical gears<\/strong>, the effective tooth count is the <strong>virtual number of teeth<\/strong> (actual teeth \u00f7 cos\u00b3\u03c8, where \u03c8 is the helix angle), which is always higher than the actual count. This means a helical gear can have fewer physical teeth than 17 without undercutting \u2014 one of the advantages of helical gears over spur gears for compact, high-ratio single-stage reductions. For example, a helical pinion with 14 actual teeth at 20\u00b0 helix has a virtual tooth count of ~16.8, safely above the undercut limit. For very small tooth counts, our engineers apply profile shifting to eliminate undercutting entirely.<\/div>\n        <\/div>\n      <\/div>\n\n    <\/div>\n  <\/div>\n<\/div>\n\n<\/div><!-- .hxc-wrap -->\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is a helical gear?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A helical gear is a cylindrical gear whose teeth are cut at an angle \u2014 the helix angle \u2014 to the gear's rotational axis. This angled tooth form means multiple teeth engage simultaneously, producing gradual overlapping contact that is quieter, stronger, and smoother than spur gears. Helical gears generate an axial thrust force that must be managed by thrust bearings or eliminated using a double helical (herringbone) configuration.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is a helical gear used for?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Helical gears are used in automotive gearboxes, inline helical gear reducers, helical gear motors, helical gear pumps, aerospace actuators, robotic servo gearheads, and helical gear rack and pinion systems for machine tool linear axes. Crossed helical gears transmit motion between non-parallel, non-intersecting shafts.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between helical gear and bevel gear?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Helical gears transmit power between parallel shafts using angled teeth on a cylindrical body. Bevel gears transmit power between intersecting shafts \u2014 typically at 90\u00b0 \u2014 using teeth on a conical body. A helical bevel gear combines both: a conical body for shaft angle change plus helical teeth for smoother engagement. A bevel helical gear reducer uses a bevel stage for the right-angle turn and a helical stage for speed reduction.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which is better, spur or helical gear?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Helical gears are better for high-speed operation, low noise, high load, and smooth transmission \u2014 the choice for automotive gearboxes and industrial gear reducers. Spur gears are better for simplicity, zero axial thrust, lower cost, and precise positioning at moderate speeds. For continuous-duty power transmission above ~3 m\/s pitch velocity, choose helical gears.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are straight or helical gears stronger?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Helical gears are 20\u201340% stronger than spur (straight-cut) gears of the same module and face width, because the diagonal mesh distributes load over a longer contact line. Helical gears win on strength and noise; straight cut gears win on simplicity and no axial thrust.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are helical gears better?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Helical gears are better than spur gears in most continuous-duty power transmission applications: quieter, stronger, smoother, and capable of higher speeds. The one disadvantage of helical gears is the axial thrust force, which requires thrust-capable bearings. For low-speed or precision indexing applications, spur gears are simpler and cheaper.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are helical gears expensive?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Helical gears cost 10\u201330% more than equivalent spur gears due to more complex hobbing setup, higher tooling wear, and the need for thrust bearings. For high-volume production with CNC helical gear hobbing, the per-piece cost difference narrows significantly.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do helical gears last longer?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes \u2014 helical gears typically outlast spur gears in comparable applications. Distributed contact load reduces Hertzian pressure on tooth flanks, slowing pitting fatigue. Gradual tooth engagement reduces dynamic loads and impact stresses. With proper lubrication and correct helix angle, helical gears can last the lifetime of the machine.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What are the disadvantages of helical gears?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The main disadvantages of helical gears are: (1) axial thrust force requiring thrust bearings; (2) higher manufacturing cost vs spur gears; (3) more complex design \u2014 helix angle, lead, and hand must all match between mating gears; (4) slightly lower efficiency than spur gears due to sliding contact (typically 0.5\u20131% per mesh). Double helical gears eliminate axial thrust at the cost of even higher manufacturing complexity.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are helical gears noisy?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Helical gears are significantly quieter than spur gears, especially at high speeds. The angled teeth create gradual, overlapping engagement rather than the simultaneous full-tooth impact of spur gears. Double helical gears are the quietest because opposing helix forces cancel, eliminating axial oscillation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can helical gears be back-driven?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes \u2014 helical gears can be back-driven just like spur gears, because their tooth normal angles create low friction relative to the driving force. Standard parallel-axis helical gear sets in inline helical gear reducers are always reversible. This contrasts with worm gears, which can be self-locking at low lead angles.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do helical gears need lubrication?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes \u2014 steel helical gears require lubrication. The sliding action between helical teeth generates more heat than spur gears. Gear oil viscosity ISO VG 150\u2013320 is typical for industrial helical gear reducers. Plastic helical gears (POM, Nylon) are often run dry. Miniature helical gears for instruments use light grease.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the best material for helical gears?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For automotive and industrial helical gear reducers: 20CrMnTi (case-hardened HRC 58\u201362) is the strongest material. For heavy-duty industrial: 42CrMo4 through-hardened. For lightweight aerospace: Al 7075-T6 or Grade 5 titanium. For helical gear pumps and food\/medical: SUS316L stainless. For low-noise automation: POM plastic helical gears. For high-temperature: PEEK miniature helical gears.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the strongest gear material?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For maximum surface and bending fatigue strength: case-hardened 20CrMnTi steel (HRC 58\u201362 surface, HRC 30\u201345 core) is the standard for high-performance helical gears. M2 tool steel gives the highest surface hardness but is more brittle. Grade 5 titanium offers the best specific strength for aerospace helical gears.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the best angle for helical gears?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"15\u00b0\u201325\u00b0 is the most common helix angle range for industrial and automotive gearboxes \u2014 giving significant improvement in contact ratio and noise while keeping axial thrust manageable. 30\u00b0\u201345\u00b0 is used in high-speed turbine gearboxes. Standard catalogue helical gears typically use 15\u00b0 or 19.5\u00b0. Our engineers recommend 20\u00b0 as the default for custom helical gears unless the application demands otherwise.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the 17-tooth rule for gears?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 17-tooth rule states that a standard 20\u00b0 pressure-angle spur gear needs at least 17 teeth to avoid undercutting. For helical gears, the effective (virtual) tooth count equals actual teeth divided by cos\u00b3(helix angle), which is always higher than the actual count. This allows helical gears to have fewer physical teeth without undercutting \u2014 one advantage over spur gears for compact, high-ratio single-stage reductions.\"\n      }\n    }\n  ]\n}\n<\/script>\n\n<script>\nfunction hxcCap(el,id){\n  document.querySelectorAll('.hxc-ct').forEach(t=>t.classList.remove('on'));\n  document.querySelectorAll('.hxc-cb').forEach(p=>p.classList.remove('on'));\n  el.classList.add('on');\n  document.getElementById(id).classList.add('on');\n}\nfunction hxcMat(el,type){\n  document.querySelectorAll('.hxc-mtt').forEach(t=>t.classList.remove('on'));\n  el.classList.add('on');\n  document.getElementById('hxc-met').style.display=type==='hxc-met'?'grid':'none';\n  document.getElementById('hxc-pla').style.display=type==='hxc-pla'?'grid':'none';\n}\nfunction hxcFaq(btn){\n  const body=btn.nextElementSibling;\n  const isOpen=btn.classList.contains('open');\n  btn.classList.toggle('open',!isOpen);\n  btn.setAttribute('aria-expanded',String(!isOpen));\n  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MOQ 1 piece.<\/p>\n\n  <!-- Stats row -->\n  <div class=\"stats\">\n    <div class=\"stat\">\n      <div class=\"sv\">24<small>hr<\/small><\/div>\n      <div class=\"sl\">Quote Response<\/div>\n    <\/div>\n    <div class=\"stat\">\n      <div class=\"sv\">MOQ <small>1<\/small><\/div>\n      <div class=\"sl\">Prototypes OK<\/div>\n    <\/div>\n    <div class=\"stat\">\n      <div class=\"sv\">ISO<\/div>\n      <div class=\"sl\">9001:2015<\/div>\n    <\/div>\n  <\/div>\n\n  <!-- Advantage list -->\n  <div class=\"avlist\">\n    <div class=\"avitem\">\n      <div class=\"ico\">&#128208;<\/div>\n      <div>\n        <div class=\"at\">DFM Review on Every Enquiry<\/div>\n        <div class=\"ad\">Tolerance feasibility, fixturing strategy, and material confirmation. Specific, actionable feedback \u2014 not generic pushback.<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"avitem\">\n      <div class=\"ico\">&#127919;<\/div>\n      <div>\n        <div class=\"at\">First Article Inspection \u2014 Standard<\/div>\n        <div class=\"ad\">FAI report on every new run. Material certs and surface treatment certs included with every shipment.<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"avitem\">\n      <div class=\"ico\">&#128260;<\/div>\n      <div>\n        <div class=\"at\">Same Process: Prototype to Production<\/div>\n        <div class=\"ad\">Process plan from your prototype applies to production batches. No re-qualification when you scale.<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"avitem\">\n      <div class=\"ico\">&#9881;<\/div>\n      <div>\n        <div class=\"at\">3 \/ 4 \/ 5-Axis CNC + Turning<\/div>\n        <div class=\"ad\">Complex structural parts, shafts, housings, and transmission components. 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class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tName\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[name]\" id=\"form-field-name\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Name\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-field_12786b6 elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_12786b6\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tCompany\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[field_12786b6]\" id=\"form-field-field_12786b6\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Company Name\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-email elementor-field-group elementor-column elementor-field-group-email 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xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M571 393Q571 407 561 418L311 668Q300 679 286 679T261 668L11 418Q0 407 0 393T11 368 36 357H536Q550 357 561 368T571 393Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t\t<select name=\"form_fields[field_0c79fc0]\" id=\"form-field-field_0c79fc0\" class=\"elementor-field-textual elementor-size-sm\">\n\t\t\t\t\t\t\t\t\t<option value=\"aluminium_6061_t6\">Aluminium 6061-T6<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"aluminium_7075_t6\">Aluminium 7075-T6<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"stainless_steel_304\">Stainless Steel 304<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"stainless_steel_316l\">Stainless Steel 316L<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"carbon_steel_4140\">Carbon Steel \/ 4140<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"titanium_ti_6al_4v\">Titanium Ti-6Al-4V<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"brass_c360\">Brass C360<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"copper\">Copper<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"peek\">PEEK<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"pom_acetal\">POM \/ Acetal<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"nylon_pa6_pa66\">Nylon PA6 \/ PA66<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"ptfe_teflon\">PTFE \/ Teflon<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"polycarbonate\">Polycarbonate<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"abs\">ABS<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"other_not_sure\">Other \/ Not sure<\/option>\n\t\t\t\t\t\t\t<\/select>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-select elementor-field-group elementor-column elementor-field-group-field_161b5ef elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_161b5ef\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tSurface Finish\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field elementor-select-wrapper remove-before \">\n\t\t\t<div class=\"select-caret-down-wrapper\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-caret-down\" viewBox=\"0 0 571.4 571.4\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M571 393Q571 407 561 418L311 668Q300 679 286 679T261 668L11 418Q0 407 0 393T11 368 36 357H536Q550 357 561 368T571 393Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t\t<select name=\"form_fields[field_161b5ef]\" id=\"form-field-field_161b5ef\" class=\"elementor-field-textual elementor-size-sm\">\n\t\t\t\t\t\t\t\t\t<option value=\"as_machined\">As-machined<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"anodised_type_ii\">Anodised Type II<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"anodised_type_iii_hard\">Anodised Type III (Hard)<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"electroplating\">Electroplating<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"powder_coating\">Powder Coating<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"black_oxide\">Black Oxide<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"passivation_ss\">Passivation (SS)<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"polishing_ra_requirement\">Polishing \/ Ra requirement<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"other_specify_below\">Other (specify below)<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Select \">Select finish (optional)<\/option>\n\t\t\t\t\t\t\t<\/select>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-textarea elementor-field-group elementor-column elementor-field-group-message elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-message\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tAdditional Requirements\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t<textarea class=\"elementor-field-textual elementor-field  elementor-size-sm\" name=\"form_fields[message]\" id=\"form-field-message\" rows=\"4\" placeholder=\"Target delivery date, critical dimensions, tolerance callouts, inspection requirements, application 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viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256s111 248 248 248 248-111 248-248zm-448 0c0-110.5 89.5-200 200-200s200 89.5 200 200-89.5 200-200 200S56 366.5 56 256zm72 20v-40c0-6.6 5.4-12 12-12h116v-67c0-10.7 12.9-16 20.5-8.5l99 99c4.7 4.7 4.7 12.3 0 17l-99 99c-7.6 7.6-20.5 2.2-20.5-8.5v-67H140c-6.6 0-12-5.4-12-12z\"><\/path><\/svg>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Submit Enquiry<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Precision helical gear manufacturer \u00b7 Ships worldwide Custom Helical GearsCNC Hobbed &amp; Ground High-performance helical gears \u2014 single, double helical (herringbone), internal helical ring gears, helical pinion shafts, crossed helical, and helical rack-and-pinion sets \u2014 manufactured to DIN \/ AGMA standards. Helix angles 5\u00b0\u201345\u00b0, module 0.5\u201320 (metric or inch), left or right hand. Quieter, stronger, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":39,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-939","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Precision Helical Gears | CNC Machined | HXCNC<\/title>\n<meta name=\"description\" content=\"CNC machined helical gears for smooth, quiet power transmission. 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