Delrin® CNC Machining Services
Precision acetal/POM machining for prototypes, low-volume production, and repeat manufacturing. Tight tolerances, material expertise, export-focused support from China.
Request a QuotationNo phone required — send your drawing and specs.
Specialized in Plastic CNC Machining
PlasticCNCPro is a precision CNC machining partner based in Dongguan, China focused exclusively on plastic and engineering polymer components. We help global B2B buyers turn drawings and 3D models into reliable machined parts made from Delrin® (acetal/POM), from fast prototypes to repeat production.
Our team understands how Delrin behaves under machining, how to control tolerances with plastics, and how to choose the right grade for wear, friction, chemical, and dimensional-stability requirements. If you need consistent Delrin parts, clear communication, and export-ready packaging, we’re ready to support your project.
Why Choose PlasticCNCPro for Delrin® CNC Machining
Plastic-Only Expertise
Specialized in CNC-machined plastic components, not metal. Deep knowledge of polymer behavior during machining.
Material Grade Guidance
Expert recommendation on acetal homopolymer vs. copolymer, PTFE-filled, or glass-reinforced grades.
Flexible Production Scale
Prototype, small-batch, and repeat production support with consistent quality across orders.
Tight Tolerance Focus
Dimensional stability is our specialty. Typical general tolerances ±0.05–0.10 mm; tight features to ±0.02 mm.
Engineering DFM Review
Engineering-oriented review of drawings and manufacturability with actionable feedback.
Export-Ready Service
Inspection documentation, impact-resistant packaging, and worldwide shipping support.
What Is Delrin® (Acetal/POM) and Why Use It
Delrin® is an acetal homopolymer (POM) known for high strength, stiffness, excellent dimensional stability, low friction, and great machinability. It resists fuels, oils, and many solvents, making it ideal for precision components.
Key Advantages
- High strength and stiffness
- Low friction, excellent wear
- Low moisture absorption
- Excellent machinability
- Good chemical resistance
Common Limitations
- Not for strong acids/alkalis
- Max continuous use ~85–100°C
- Can creep under long-term load
- Not transparent; limited colors
Typical Delrin® CNC Applications We Manufacture
Industrial & Automation
Bushings, wear strips, guide rails, cams, rollers, pulleys
Semiconductor / Electronics
Low-friction carriers, insulating spacers, machine fixtures
Medical & Lab Devices
Instrument components, sample holders, housings
Automotive & Transportation
Gears, throttle bodies, pump components, brackets
Aerospace / Defense
Lightweight structural parts, precision insulators
Pumps, Valves, Fluid Handling
Seats, manifolds, seals, couplings (chemistry-dependent)
Food Processing & Packaging
Change parts, star wheels, timing screws
Robotics / Jigs / Fixtures
Custom assembly tools, wear-resistant components
General Wear & Corrosion Parts
Where low friction and dimensional stability are critical
Delrin® Grades We Support
- Delrin® acetal homopolymers (various viscosity and strength grades)
- Acetal copolymers (POM-C) for improved hot-water and chemical resistance
- PTFE-filled acetal (Delrin AF or equivalent) for lower friction and better wear
- Glass-fiber reinforced and other specialty grades (availability varies)
- Antistatic/conductive acetal grades for ESD-sensitive environments
Our team can recommend a grade based on strength, wear, friction, chemical exposure, temperature, and cost targets.
Our Delrin® CNC Machining Capabilities
2.5D and 3D contours, pockets, profiles, complex geometries
Bushings, rollers, pulleys, spacers, threaded components
Metric/imperial coarse/fine threads, thread inserts
Full finish machining and custom surfaces
Typical Tolerance Ranges
- General features: ±0.05–0.10 mm
- Tight features: ±0.02–0.05 mm (geometry-dependent)
- Roundness/concentricity: per drawing and fixture strategy
- Flatness/perpendicularity: with GD&T and inspection plan
Actual achievable tolerances depend on part size, geometry, fixturing, and inspection method. Confirmed in quotation after DFM review.
Surface Finish and Design Guidelines
Surface Finish & Edge Quality
- Machined finish: Ra ~1.6–3.2 µm with sharp tools
- Fine finishing: deburring, edge radiusing, light sanding
- Laser/engraved markings on request
- Polishing limited; very glossy finishes not typical
Design Guidelines for Machining
- Wall thickness: prefer ≥2.5–3.0 mm for structural parts
- Add generous fillets and radii to reduce stress
- Prefer coarse threads; consider helical inserts
- Account for CTE (~110–130 µm/m·°C)
- Avoid excessive press fits causing creep/stress cracking
We provide DFM feedback to balance performance, cost, and manufacturability.
Delrin® vs. Other Engineering Plastics
| Property | Delrin (Homopolymer) | Nylon | UHMW-PE | POM-C |
|---|---|---|---|---|
| Moisture Absorption | Low — best dimensional stability | High — can swell | Very low | Low |
| Stiffness / Dimensional Control | Excellent | Good (when dry) | Lower — harder to hold tight tolerances | Very good (slightly lower than homopolymer) |
| Wear / Friction | Excellent low friction | Good, but can vary with moisture | Excellent for extreme wear | Good |
| Temperature Resistance | Up to ~100°C continuous | Higher melting point | Lower (~80°C) | Similar to homopolymer |
| Chemical Resistance | Good (avoid strong acids/alkalis) | Moderate | Excellent | Improved vs homopolymer for hydrolysis |
Selection depends on your environment and performance priorities. Contact us for grade recommendations.
Ideal Projects We Support
From prototypes to low- and medium-volume production, complex geometries, replacement parts, jigs, fixtures, and more.
Our Working Process
Send Requirements
2D drawing, 3D file, sample, or project description
DFM & Quotation
Design review, material/tolerance analysis, clear quote
Manufacture & Inspect
RFQ Support
Send Your Drawing for a Quote
Share your 2D drawing, 3D model, material, quantity, tolerance, surface finish, and application details. Our team will review manufacturability and reply with a practical quotation.
Email: info@plasticcncpro.com
Address: 29 Fuxing Road, Dongguan City, Guangdong Province, China