CNC Machining for Delrin
Resolute Precision Manufacturing produces precision CNC machined Delrin (Acetal Copolymer) components for industrial and consumer applications. Delrin (Acetal Copolymer) combines unique properties general-purpose acetal copolymer that make it the right material choice for applications where cost, machinability, and chemical resistance matter. From prototype evaluation to high-volume production, we deliver precision delrin (acetal copolymer) components on schedule. Request a QuoteWhy Delrin for Precision CNC Machining
Delrin is chosen for CNC machining in applications where metal is either cost-prohibitive, too heavy, or insufficient. Unlike brittle thermosets, delrin can be machined to tight tolerances without crazing, stress fracture, or dimensional change. The material’s low thermal conductivity and machinability mean CNC cutting speeds are moderate and tooling costs are predictable. For production volumes, delrin components cost 30—60% less than equivalent metal parts while offering weight savings, corrosion immunity, and design flexibility that metal cannot match.
Common Applications for Delrin
- Mechanical slider blocks and wear guides
- Precision gears and sprockets
- Bushings and linear motion components
- Conveyor rollers and idlers
- Spring clips and retainers
- Hydraulic pump components and manifolds
Specifications
| CNC Turning | Swiss CNC (20mm–38mm); Y-axis dual spindle lathe, ideal for tight OD tolerances and threaded components |
| CNC Milling | 3, 4, and 5-axis CNC milling for complex geometries, pockets, and contoured surfaces |
| Tolerances | ±0.005″ standard; ±0.002″ achievable with secondary finishing operations |
| Surface Finish | As-machined (Ra 32 µin); polished and hand-finished surfaces available |
| Material | General-purpose acetal copolymer |
| Volume Capability | Prototype through production runs |
| Certifications | ISO 9001:2015 |
Industries We Serve
CNC Turning Services
CNC Milling Services
Custom Fasteners
Value-Added Services
Frequently Asked Questions
Q: What tolerances can RPM hold on delrin components?
We routinely hold ±0.005″ on diameter and length. With secondary finishing (boring, grinding, or polishing), ±0.002″ is achievable. The limiting factor is material creep and thermal expansion in delrin, not machine capability.
Q: Can RPM machine delrin with external coolant?
Yes. Delrin machines cleanly dry or with coolant. We use both approaches depending on the application. Dry machining reduces coolant disposal costs; flooded cooling improves surface finish on precision surfaces.
Q: How does delrin compare to metal for this application?
Cost is typically 30—60% lower for delrin Weight is 1/5th to 1/6th of steel. Chemical resistance and corrosion immunity are superior. However, Delrin has lower strength and stiffness, so structural applications may require metal or reinforced polymer.
Q: Can we source delrin in different colors or grades?
Yes. We stock natural (unfilled) and several pigmented grades. For specialty requirements (UV-stabilized, FDA-approved, flame-retardant, or glass-filled), we can procure material and schedule production. Lead time depends on material availability.