POM Acetal (Polyoxymethylene) — The Complete CNC Machining Plastics Guide

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POM acetal Delrin CNC machined gears and precision parts - Nylonplastic CNC service

POM Acetal (Polyoxymethylene) — The Complete CNC Machining Plastics Gu
POM Acetal (Polyoxymethylene) — The Complete CNC Machining Plastics Gu

What Is POM Acetal Plastic?

Professional industrial photograph: POM Acetal (Polyoxymethylene) , manufacturin
Professional industrial photograph: POM Acetal (Polyoxymethylene) , manufacturin

POM (Polyoxymethylene), also known as acetal or Delrin, is a highly crystalline engineering thermoplastic. Its combination of high stiffness, low friction, and excellent dimensional stability makes it ideal for precision mechanical components.

Key Properties of POM

  • Tensile Strength: 60–70 MPa
  • Flexural Modulus: 2,500–2,800 MPa
  • Melting Point: 165–175°C
  • Coefficient of Friction: 0.2–0.35

CNC Machining Best Practices

Use sharp carbide tools, 150–250 m/min cutting speed for turning, and air blast or flood coolant.

Common Applications

Gears, sprockets, bearings, bushings, guide rails, food processing equipment, and medical device components.

FAQ

When is POM Acetal (Polyoxymethylene) — The Complete CNC Machining Plastics Guide a good option?

POM Acetal (Polyoxymethylene) — The Complete CNC Machining Plastics Guide is a good option when fast iteration, complex geometry, low tooling cost, or low-volume production is more important than molded-part unit cost.

What should be checked before choosing POM Acetal (Polyoxymethylene) — The Complete CNC Machining Plastics Guide?

Check part size, material properties, surface finish, dimensional tolerance, heat exposure, load direction, and whether post-processing is required.

How does POM Acetal (Polyoxymethylene) — The Complete CNC Machining Plastics Guide compare with CNC machining?

3D printing can create complex shapes quickly, while CNC machining is often stronger for precise surfaces, tighter tolerances, and production-grade materials.

What affects the cost of POM Acetal (Polyoxymethylene) — The Complete CNC Machining Plastics Guide?

Cost depends on material, build volume, print time, layer height, support removal, finishing, inspection, and the number of parts in the build.

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