CNC Machining Service
CNC Milling
Service
Custom 3-Axis, 4-Axis and 5-Axis CNC milling for precision metal and plastic parts — from single prototypes to full production runs.
3 / 4 / 5-Axis
Tolerance ±0.01 mm
Max 2000 × 1000 mm
Surface Finish Ra 0.8 μm
Quote in 24 Hours
Service Overview
Custom CNC Milling for Complex Geometries and Precision Surfaces
CNC milling uses rotating multi-point cutting tools to remove material from a workpiece, producing precise flat surfaces, pockets, slots, contours, threaded holes, and complex 3D profiles. Unlike turning, milling is the preferred process for parts with prismatic geometry, multiple machined faces, and freeform surfaces.
We operate 3-axis, 4-axis, and 5-axis simultaneous milling centers — covering everything from simple plate-cutting work to full 5-axis contouring of impellers, aerospace brackets, and medical device housings, all under one roof.
Every order starts with a Design for Manufacturability (DFM) review. We check wall thicknesses, tool access angles, tolerance stack-ups, and surface finish requirements before cutting begins — eliminating surprises during production.
Flat SurfacesPockets & Slots
ContoursThreaded Holes
Complex SurfacesPrecision Cavities
Multi-Face PartsTight-Tolerance Bores
Capabilities
CNC Milling Capabilities
3X
3-Axis Milling
The workhorse of CNC milling. Ideal for flat surfaces, pockets, slots, drilled holes, and plate-type parts. High efficiency and low setup cost for standard prismatic geometry across all materials.
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4X
4-Axis Milling
Adds a rotary axis for indexed or continuous side-face machining. Reduces re-fixturing and enables features around the circumference of cylindrical or prismatic parts in fewer setups.
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5X
5-Axis Simultaneous Milling
Full simultaneous 5-axis machining for complex freeform surfaces, undercuts, and multi-face parts in a single setup. Eliminates fixture error accumulation and delivers superior surface quality on demanding geometry.
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P
Prototype Milling
Fast-turn prototype milling for design validation and functional testing. 3–5 day lead time on 1 to 50 pieces. DFM feedback included — we flag issues before they become expensive production problems.
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Σ
Production Milling
Consistent, repeatable milling for production runs from 100 to 100,000+ pieces. Dedicated fixtures, SPC monitoring, and in-process inspection ensure every batch meets drawing requirements.
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±
Precision Feature Machining
When standard tolerances aren't enough. We machine precision bores, sealing faces, mating surfaces, and installation datum planes to ±0.005 mm with CMM verification and full dimensional reports.
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Products
Typical CNC Milled Parts We Produce
Aluminum Housings & Enclosures
Mounting Brackets
Base Plates & Fixture Plates
Heat Sinks & Cold Plates
Manifold Blocks
Valve Bodies
Electronics Enclosures
Robot Structural Parts
UAV Frames & Motor Mounts
Medical Device Housings
Custom Precision Plates & Blocks
Semiconductor Equipment Parts
±0.01mm
Standard Tolerance
5-Axis
Max CNC Axes
Ra 0.8μm
Surface Finish
24hr
Quote Turnaround
Technical Specifications
Tolerances & Technical Specs
Standard Tolerance
±0.01 mm
Per ISO 2768-m
Precision Tolerance
±0.005 mm
On critical features
Max Part Size
2000×1000 mm
Large-format milling
CNC Axes
3/4/5-Axis
Simultaneous 5-axis available
Surface Finish
Ra 0.8 μm
As-milled; finer via post-process
Positional Tolerance
±0.02 mm
Hole true position typical
✓
Threaded holes — metric, UNC, UNF, NPT✓
GD&T callouts verified per drawing✓
Custom CMM inspection report on every order✓
Prototype and production quantities supported✓
Material certification (mill cert) availablePost-Processing
Surface Finishes for CNC Milled Parts
Anodizing (Type II & III)
Corrosion-resistant oxide layer for aluminum parts. Type II for general use and color; Type III (hard anodize) for wear resistance up to Hv 500.
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Bead Blasting
Uniform matte or satin texture that removes machining marks. Standard pre-treatment before anodizing on aluminum, stainless, and titanium parts.
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Passivation
Chemical treatment that enhances the natural corrosion resistance of stainless steel milled parts. ASTM A967 compliant. No dimensional change.
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Powder Coating
Durable thermosetting polymer coating in full RAL colors. Chip-resistant and UV-stable at 60–100 μm. Ideal for aluminum structural parts and enclosures.
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Polishing & Electropolishing
Mirror finish down to Ra 0.05 μm. Mechanical polishing for cosmetic parts; electropolishing for stainless steel medical and food-contact components.
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Electroplating (Ni, Zn, Cr, Au)
Metallic coating for corrosion protection, conductivity, and wear resistance. Electroless nickel for uniform coverage on complex milled geometry.
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Quality Assurance
Quality Assurance for Precision Milled Parts
CMM
CMM Inspection for Critical Dimensions
3D coordinate measuring machine inspection on all critical features. Full dimensional report provided per drawing — no selective sampling on precision orders.
MC
Material Certification Available
Mill certificates with heat number traceability on all orders. Third-party testing and compliance documentation available on request for aerospace and medical parts.
IP
In-Process & Final Inspection
First-article inspection at setup, in-process checks at key operations, and 100% final dimensional check before shipment.
QP
Drawing-Based QC Plans
Inspection plans built from your GD&T drawing. Every callout — true position, parallelism, flatness, perpendicularity — is verified and documented.
TR
Traceable Production Workflow
Full lot traceability from raw material through machining, surface treatment, and final inspection. Production records retained for aerospace and medical supply chains.
Applications
CNC Milling for Critical Industries
Aerospace
Lightweight brackets and structural parts in Al 7075 and Ti TC4
Medical
Instrument housings and precision components to ISO 13485
Automotive
Covers, housings, and mounting blocks for ICE and EV platforms
Electronics
Enclosures, heat sinks, and precision plates for semiconductor equipment
Robotics
Frames, mounts, end-effector parts, and joint housings
UAV / Drone
Lightweight machined structures, motor mounts, and gimbal frames
Order Process
How Our CNC Milling Service Works
1
Upload CAD File
Send STEP, IGES, or DWG. Automatic DFM analysis flags geometry issues before quoting.
2
Receive Quote
Detailed quote within 24 hours — material, tolerance, axis count, finish, and lead time included.
3
Approve & Order
Confirm specs online. Full order traceability from placement to delivery.
4
CNC Production
Parts programmed and milled by skilled operators. In-process checks throughout production.
5
QC & Delivery
CMM inspection, surface treatment, material certs — then shipped worldwide with tracking.
FAQ
Frequently Asked Questions
What is CNC milling service?+
CNC milling is a subtractive manufacturing process where rotating multi-point cutting tools remove material from a workpiece to produce flat surfaces, pockets, slots, contours, and complex 3D profiles. CNC means the machine movements are digitally programmed, ensuring repeatable precision across every part in a production run.
What materials can you machine with CNC milling?+
We machine all common engineering metals and plastics — including aluminum alloys (6061, 7075, 5052), carbon steel, alloy steel, stainless steel (304, 316L, 17-4PH), titanium (Grade 2, Grade 5 / TC4), copper, brass, bronze, and engineering plastics such as PEEK, Delrin, Nylon, PTFE, and Polycarbonate. We stock 500+ material grades.
What tolerance can you hold for milled parts?+
Our standard tolerance is ±0.01 mm (ISO 2768-m). For critical features such as precision bores, sealing faces, and mating surfaces, we routinely hold ±0.005 mm with CMM verification. Extremely tight tolerances (±0.002 mm) are achievable on specific features with a precision grinding step.
What is the maximum part size for CNC milling?+
Our largest milling capacity accommodates parts up to 2000 × 1000 mm on 3-axis machines. For 5-axis simultaneous machining, part size depends on specific geometry — contact us with your drawing for a capability assessment. We can also handle very small parts down to 10 mm in the smallest dimension.
Do you offer 3-axis, 4-axis and 5-axis milling?+
Yes — we offer all three. 3-axis milling for standard prismatic parts; 4-axis for parts needing indexed or continuous rotary features; and full simultaneous 5-axis for complex freeform surfaces, undercuts, and multi-face machining in a single setup. We recommend the right axis count based on your part geometry to optimize cost and lead time.
Can you support prototype and low-volume production?+
Yes. We support order quantities from 1-piece prototypes up to 100,000+ piece production runs with no minimum order quantity. Prototype lead time is typically 3–5 business days. Low-volume production (10–500 pieces) runs in 5–10 business days. We scale from prototype to production without changing suppliers.
What surface finishes are available for milled parts?+
We offer a comprehensive range of post-machining surface treatments: Type II and Type III anodizing for aluminum, bead blasting, passivation for stainless steel, powder coating, electropolishing, electroplating (nickel, chrome, zinc, gold), DLC coating, PVD / CVD coating, and laser marking.
How fast can I get a quote for CNC milling parts?+
For standard parts, we provide a full quote within 24 hours of receiving your CAD file and drawing. Complex parts or large assemblies may take up to 48 hours. Upload your STEP file and drawing through our quoting system, and our application engineers will review DFM requirements alongside the price quotation.
Get a Quote
Send Your Drawing.
Get a Quote.
Every enquiry includes a DFM review — tolerance feasibility, material confirmation, and process approach confirmed before production starts. MOQ 1 piece.
24hr
Quote Response
MOQ 1
Prototypes OK
ISO
9001:2015
📐
DFM Review on Every Enquiry
Tolerance feasibility, fixturing strategy, and material confirmation. Specific, actionable feedback — not generic pushback.
🎯
First Article Inspection — Standard
FAI report on every new run. Material certs and surface treatment certs included with every shipment.
🔄
Same Process: Prototype to Production
Process plan from your prototype applies to production batches. No re-qualification when you scale.
⚙
3 / 4 / 5-Axis CNC + Turning
Complex structural parts, shafts, housings, and transmission components. Metals and engineering plastics.
ISO 9001:2015
3/4/5-Axis Milling
CNC Turning
CMM Inspection
Global Delivery