CNC machining is one of the most reliable methods for producing high-precision plastic gears. Unlike injection molding, CNC machining offers superior dimensional control and does not require expensive tooling, making it ideal for prototypes and low-to-medium volume production.
Best Plastic Materials for CNC Gears
| Material | Best For | Key Advantage |
|---|---|---|
| POM (Delrin) | General purpose gears | Low friction, excellent wear resistance |
| Nylon 6/6 | Medium-load gears | Good strength, self-lubricating |
| PEEK | High-temperature gears | 260°C continuous service |
| PTFE | Chemical environment gears | Excellent chemical resistance |
| UHMWPE | Low-noise gears | Impact resistant, quiet operation |
Tolerance Requirements for Plastic Gears
Gear geometry demands tight tolerances. We achieve AGMA quality class Q8-Q10 on plastic gears through precision five-axis CNC machining:
- Profile tolerance: +/-0.01mm
- Pitch diameter: +/-0.01mm
- Bore concentricity: 0.01mm TIR
- Tooth thickness: +/-0.015mm
CNC vs Injection Molded Plastic Gears
CNC machined gears offer better precision, no mold cost, and faster turnaround for prototypes. Injection molding becomes economical above 5,000-10,000 pieces.
Learn more about POM machining capabilities for gear applications.
Upload your gear drawing for a free quote. ISO 9001 certified. POM, Nylon, PEEK gears in 5-7 days.