POM Parts We Machine
Ten POM part families where low friction and dimensional stability decide the material.
Ten Part Families We Run Repeatedly
| Part family | Common materials | Key tolerances | Typical finish | Typical order |
|---|---|---|---|---|
| Precision gears and racks | POM-C (Delrin) | Tooth profile +/-0.02 mm | As-machined | 200 to 5,000 pcs |
| Bushings and bearings | POM-C | ID +/-0.01 mm | As-machined | 1,000 to 10,000 pcs |
| Valve seats and seals | POM-H | Seat flatness 0.01 mm | As-machined | 500 to 5,000 pcs |
| Insulating spacers | POM-C | +/-0.01 mm | As-machined | 5,000 to 20,000 pcs |
| Cam followers and rollers | POM-C | Roundness 0.01 mm | As-machined | 500 to 5,000 pcs |
| Wear strips and guides | POM-H | +/-0.05 mm | As-machined | 500 to 5,000 pcs |
| Fluid handling fittings | POM-C | +/-0.02 mm ports, leak tested | As-machined | 500 to 5,000 pcs |
| Knee joint and mechanism parts | POM-C | +/-0.02 mm pivot bores | As-machined | 200 to 2,000 pcs |
| Pump impellers | POM-H | Blade profile +/-0.05 mm | As-machined | 200 to 2,000 pcs |
| Glass-filled structural parts | POM+GF30 | +/-0.02 mm, stiffening ribs to drawing | As-machined | 100 to 2,000 pcs |
Material detail: POM machining. Toughness alternative: nylon.
Worked examples with full measurement data: case studies.
Get a quote in 24 h Inspection & QC Tolerance standards
Frequently Asked Questions
What tolerance can you hold on plastic parts?
On stable geometries we hold +/-0.005 mm on polymer parts, matching our metal capability; minus-material behavior like moisture uptake is planned into the process. Standard tolerance is +/-0.05 mm unless the drawing calls tighter.
Do plastic parts need annealing?
Stress relief (hot oil or air annealing) is planned per material and geometry; PTFE nearly always gets an anneal before finish passes, and PC benefits on stress-sensitive features.
Can you source certified plastic stock?
Yes, stocked rods and sheets come with mill certificates; medical-grade and ESD grades are sourced per drawing callout.
Send Your Drawing
Quote with engineering feedback within 24 hours; prototypes in 7 to 15 days.
Request a Quote