When it comes to high-performance plastic components, POM (also known as Delrin® or acetal) is one of the most reliable materials in the game. It’s strong, dimensionally stable, and machines like a dream. But to get the most out of it, you need the right process—CNC precision turning and milling.
Here’s why that combo is the go-to for companies needing tight-tolerance plastic parts that just work.
What Is POM, Really?
POM (Polyoxymethylene) is an engineering thermoplastic known for:
- High stiffness and low friction
- Excellent wear resistance
- Dimensional stability even under stress
- Strong resistance to chemicals and moisture
Why CNC Machining Is Perfect for POM
CNC machining—especially turning and milling—lets you produce incredibly accurate parts from solid POM stock. That’s crucial when you’re working with components like:
- Bushings
- Gears
- Custom spacers
- Sliding mechanisms
- Valve bodies
- Sealing caps
- Mounting brackets
With CNC turning, you can achieve smooth, round features like threads, bores, and shafts. Milling allows you to add flats, pockets, slots, holes, and more—all in one go.
Tight Tolerances? No Problem
POM machines cleanly without melting or gumming up tools, which means:
- Sharper edges and better finishes
- No need for post-processing (in most cases)
- Consistent results, even in high-volume runs
If you need ±0.01 mm tolerances on a thousand parts? No sweat. The right CNC shop can hold those specs day in and day out.
Where POM CNC Parts Shine: Industry Use Cases
- Medical: Surgical handles, inhalers (biocompatible, sterilizable) .
- Electronics: Insulators, connectors (dielectric strength) .
- Automotive: Fuel system components, seatbelt mechanisms .
- Robotics: Gears, cams (wear-resistant, no lubrication needed)
| | CNC Turning, CNC Milling, Laser Cutting, Bending, Spining, Wire Cutting, Stamping, Electric Discharge Machining (EDM), Injection Molding,3D Printing,Rapid Prototype,Moulds etc. |
| | Aluminum: 2000 series, 6000 series, 7075, 5052, etc. |
| Stainlesss steel: SUS303, SUS304, SS316, SS316L, 17-4PH, etc. |
| Steel: 1214L/1215/1045/4140/SCM440/40CrMo, etc. |
| Brass: 260, C360, H59, H60, H62, H63, H65, H68, H70, Bronze, Copper |
| Titanium: Grade F1-F5 |
| Plastic: Acetal/POM/PA/Nylon/PC/PMMA/PVC/PU/Acrylic/ABS/PTFE/PEEK etc. |
| | Anodized, Bead Blasted, Silk Screen, PVD Plating, Zinc/Nickl/Chrome/Titanium Plating, Brushing, Painting, Powder Coated, Passivation, Electrophoresis, Electro Polishing, Knurl, Laser/Etch/Engrave etc. |
| | ±0.002 ~ ±0.005mm |
| | Min Ra 0.1~3.2 |
| CERTIFICATE | ISO9001:2015,AS9100D,ISO13485:2016,ISO45001:2018,IATF16949:2016,ISO14001:2015,ROSH,CE etc. |
FAQ
1. Are you a manufacturer or a trading company?
We are a factory located in Shenzhen, China, with 20 years of rich experience,
covering 6000 square meters. Complete facilities, including 3D quality inspection equipment, ERP system and 40 machines. If necessary, we can provide you with material certificates, sample quality inspection and other reports.
2. How to get a quote?
Detailed drawings (PDF/STEP/IGS/DWG...), including quality, delivery date, materials, quality, quantity, surface treatment and other information.
3. Can I get a quotation without drawings?
Can your engineering team draw for my creativity? Of course, we are also glad to receive your samples, pictures or detailed size drafts for accurate quotation.
4. Can you provide samples before mass production?
Of course, the sample fee is necessary. If possible, it will be returned during mass production.
5. What is the delivery date?
Generally, the sample lasts for 1-2 weeks and the batch production lasts for 3-4 weeks.
6. How do you control quality?
(1) Material Inspection - Check material surfaces and approximate dimensions.
(2) First inspection of production - ensure
critical dimensions in mass production.
(3) Sampling inspection - check the quality before delivery to the warehouse.
(4) Preshipment inspection - 100% inspection by QC assistant before shipment.
7. After sales service team
If you have any problems after receiving the product, you can provide feedback through voice call, video conference, email, etc. within one month. Our team will provide you with solutions within a week.
