Precision Plastic Parts Manufacturer in China
Plastic CNC Machining Services
High-precision plastic CNC machining for prototyping and production parts. Tight tolerances, fast lead times, and consistent quality.
Plastic CNC Machining
We machine engineering plastics with high accuracy to deliver functional parts for prototypes and end-use applications. From simple components to complex geometries, we maintain tight tolerances and consistent quality across every project.
With advanced CNC equipment and experienced machinists, we support rapid prototyping and low-volume production with reliable lead times.
- High accuracy to tight tolerances
- Wide range of engineering plastics
- Fast turnaround for prototypes and production
- Complex geometry and fine feature capability
- Consistent quality with full inspection support
- Custom finishes and secondary operations available
Plastic Material Options
| Plastic Grade | Tensile Strength (MPa) | Heat Resistance (°C) | Moisture Absorption (%) | Machinability | Typical Uses |
|---|---|---|---|---|---|
| POM / Delrin | 60–75 | -40 to 120 | 0.2–0.5 | Excellent | Gears, bushings, precision parts |
| PEEK | 90–100 | -60 to 250 | 0.1–0.3 | Good | Aerospace, medical, high-performance parts |
| Nylon (PA6/PA66) | 70–85 | -40 to 120 | 1.0–2.5 | Good | Gears, bearings, structural parts |
| PTFE | 20–35 | -200 to 260 | < 0.01 | Fair | Seals, gaskets, chemical components |
| Polycarbonate (PC) | 60–70 | -40 to 120 | 0.2–0.4 | Good | Transparent parts, guards, housings |
| PMMA / Acrylic | 60–75 | -40 to 80 | 0.2–0.4 | Excellent | Displays, lenses, light guides |
| ABS | 40–55 | -20 to 80 | 0.2–0.4 | Good | Housings, enclosures, prototypes |
| PEI (Ultem) | 80–100 | -60 to 170 | 0.2–0.7 | Good | Insulators, fixtures, high-temperature parts |
Plastic CNC Machining Capabilities
Advanced CNC equipment and skilled machining engineers deliver high-precision plastic parts for prototyping and low-volume production.
Plastic CNC Milling
High-precision 3-axis milling for complex features, pockets, and contours.
Plastic CNC Turning
Accurate turning for shafts, pins, bushings, and rotational components.
5-Axis Plastic Machining
Simultaneous 5-axis machining for intricate shapes and tight tolerances.
Prototype & Low-Volume
Fast turnaround from prototypes to low-volume production with consistent quality.
Quality Control for Plastic CNC Machining
We inspect plastic CNC machined parts throughout production to verify material, dimensions, tolerances, and surface quality. Calibrated inspection equipment and documented quality procedures help ensure consistent results from prototypes to low-volume production.
- Plastic material verification and batch traceability
- In-process dimensional checks during CNC machining
- Critical tolerances inspected with calibrated equipment
- Visual inspection for burrs, scratches, and machining defects
- First article and final inspection available when required
- Material certificates and inspection reports available on request
Machined Plastic Parts Display
Aluminum Impeller
POM Valve Body
Nylon Gear Housing
PTFE Seal Component
Clear Acrylic Manifold
Polycarbonate Cover
Plastic CNC Machining FAQs
What plastics can you CNC machine?
We machine a wide range of engineering plastics, including POM (Delrin), PEEK, nylon, PTFE, ABS, polycarbonate, acrylic, PEI, PVC, and HDPE. We can help select a suitable material based on strength, temperature, chemical resistance, and application requirements.
What tolerances can you achieve on CNC machined plastic parts?
Typical tolerances are ±0.05 mm, while tighter tolerances may be possible for critical features. The achievable tolerance depends on the plastic grade, part geometry, wall thickness, and moisture or temperature sensitivity.
Can you machine plastic prototypes and low-volume production parts?
Yes. We support one-off prototypes, engineering samples, and low-volume production. CNC machining is suitable for producing functional plastic parts without the cost and lead time of injection molding tooling.
Can you machine transparent plastic parts?
Yes. We machine acrylic and polycarbonate parts such as covers, windows, light guides, and manifolds. Polishing can be applied when improved clarity is required.
How do you control deformation during plastic CNC machining?
We use suitable cutting parameters, sharp tools, controlled clamping, and staged machining to reduce heat buildup and internal stress. For dimensionally sensitive parts, additional finishing passes or stress-relieved material may be recommended.
Do you provide material certificates and inspection reports?
Yes. Material certificates, dimensional inspection reports, and first article inspection documents are available when required. Please specify your documentation requirements when requesting a quote.
Can you add threads, inserts, or surface finishes to machined plastic parts?
Yes. Available secondary operations include drilling, tapping, threaded insert installation, polishing, deburring, engraving, and part marking. The available options depend on the selected plastic and part design.
What information is required for a plastic CNC machining quote?
Please provide a 3D CAD file, a 2D drawing where available, the required plastic material, quantity, tolerances, surface finish, and any inspection requirements. STEP, STP, IGES, X_T, DWG, DXF, and PDF files are accepted.
Get a Quote for Custom Aluminum Parts
Send us your CAD files and drawings. We will review the aluminum grade, tolerances, surface finish, and quantity before providing a quote.
- Aluminum Grades Available
- DFM Review Included
- Quote Within 24 Hours