We provide comprehensive precision CNC milling services utilizing advanced multi-axis machining centers to produce complex components with exceptional dimensional accuracy and superior surface finishes. Our milling capabilities support industries ranging from aerospace and medical to electronics and industrial machinery with both prototyping and high-volume production.
| Product Name | Precision CNC Milling Parts |
|---|---|
| Material Available | Aluminum |
| Surface Finish | Black Oxidation |
| Processing | CNC Milling |
| Tolerance | ±0.002~0.005mm |
| Drawing Accepted | IGES(igs), STEP(stp), SolidWorks (sodprt), PRT, AutoCad, or Samples |
| Inspection | CMM, Projector, Height Gauge, etc. |
| Lead Time | 7~35 working days |
| Quality Assurance | ISO9001:2015, SGS, RoHs |
| Payment Term | MoneyGram, Western Union, T/T, D/P, D/A, L/C |
| Price | According to your drawing or requirements |
| Engineer Support | Available for engineering assistance and drawings design |
| Packaging | Bubble and Carton or Customization |
|---|---|
| Port | Shenzhen |

|
Operation |
Equipment/Process |
Capability |
Typical Tolerances |
|
CNC Turning |
Live tooling on mills, separate lathes |
Turning features on milled parts |
±0.01mm |
|
Grinding |
Surface, cylindrical, jig grinders |
Precision flatness, parallelism, size |
±0.002mm |
|
EDM |
Wire and sinker EDM |
Complex geometries, hard materials |
±0.005mm |
|
Heat Treatment |
Vacuum furnaces, atmosphere controlled |
Hardening, tempering, stress relief |
Material dependent |
|
Welding |
TIG, laser, electron beam |
Component assembly, repair |
±0.05mm after weld |
|
Assembly |
Press fits, adhesive, fastening |
Multi-component assemblies |
As per drawing |
|
Finish Type |
Process Method |
Surface Ra (μm) |
Characteristics & Applications |
|
As-Machined |
Standard CNC milling |
0.8-3.2 |
Cost-effective, visible tool marks, general applications |
|
Bead Blasting |
Glass bead, aluminum oxide |
0.8-1.6 |
Matte finish, uniform appearance, stress relief |
|
Polishing |
Mechanical, chemical, electro |
0.025-0.4 |
Reflective, smooth, food, medical, optical |
|
Anodizing |
Type I-III, hardcoat (Al) |
Base material dependent |
Decorative, corrosion resistant, wear resistant |
|
Plating |
Nickel, chrome, zinc, tin |
Varies |
Corrosion protection, appearance, solderability |
|
Powder Coating |
Electrostatic application |
N/A (coating) |
Durable, color options, corrosion protection |
|
Passivation |
Nitric or citric acid (SS) |
Base material finish |
Corrosion resistance restoration |
|
Laser Marking |
Fiber, YAG lasers |
N/A (marking) |
Permanent identification, serialization, logos |
|
Tumbling/Vibratory |
Media finishing |
0.4-1.6 |
Deburring, edge breaking, surface smoothing |
CMM (Coordinate Measuring Machines): 3D measurement with 0.001mm accuracy, temperature controlled
Optical Comparators/Vision Systems: Non-contact measurement, 2D profile verification
Surface Roughness Testers: Contact and non-contact Ra, Rz, Rq measurements
Roundness/Form Testers: Cylindricity, concentricity, flatness verification
Hardness Testers: Rockwell, Brinell, Vickers, micro-hardness
Portable Arms: Articulated arms with laser scanner for large parts
Digital Height Gauges: Precision height measurement with 0.001mm resolution
Gauge Blocks & Calibrated Instruments: Full set to ISO 3650 standards
Force/Torque Measurement: For assembly validation, spring constant verification
ISO 9001:2015 Certified: Full quality management system implementation
First Article Inspection: AS9102, PPAP, or custom FAIR documentation
Statistical Process Control: Real-time monitoring of critical characteristics
Material Certification: Mill test reports, material traceability to heat/lot
Calibration Program: All inspection equipment calibrated to NIST-traceable standards
Document Control: Revision-controlled drawings, specifications, procedures
Non-Conformance System: Documented containment, root cause analysis, corrective action

| Production Type | Standard Lead Time | Expedited Options | Factors Affecting Lead Time |
|---|---|---|---|
| Prototype (1-10 pcs) | 5-15 business days | 3-5 days (+30-50%) | Material availability, complexity, fixturing |
| Low Volume (10-100 pcs) | 10-25 business days | 5-10 days (+25-40%) | Tooling requirements, secondary operations |
| Medium Volume (100-1,000 pcs) | 3-5 weeks | 2-3 weeks (+20-35%) | Production scheduling, capacity |
| High Volume (1,000+ pcs) | 6-12 weeks | 4-8 weeks (+15-30%) | Material procurement, dedicated production runs |
| Large Parts (>1m dimension) | 4-10 weeks | 3-6 weeks (+25-50%) | Special handling, machine availability |