CNC Grinding
Precision surface grinding and polishing services that deliver controlled flatness, exacting tolerances, and high-quality finishes on complex components.
PMI’s CNC grinding and polishing capability is designed for components that demand superior surface condition, tight geometric control, and consistent production quality. Supported by advanced 3- and 4-axis CNC grinding platforms and specialized polishing expertise, PMI helps customers meet demanding dimensional and finish requirements across aerospace, medical, and industrial applications.
Common Applications
- Precision surfaces requiring flatness and co-planarity control within tight tolerances.
- Medical device components, including orthopedic implants and surgical instrumentation, needing high-quality polished finishes.
- Functional surfaces for aerospace and defense parts where controlled finishes influence assembly fit or performance
- Large part surface preparation using Blanchard grinding prior to downstream machining or treatment.
- Components requiring surface finishes up to 4 Ra for performance or aesthetic requirements.
Technical Range
PMI’s CNC grinding and polishing capabilities include:
- CNC Controlled Precision Surface Grinding: 3- and 4-axis automatic grinding capable of maintaining challenging geometric tolerances and flatness
- Blanchard Grinding Up to 16” Diameter: Broad capacity for surface preparation on larger components.
- Polishing & Buffing Expertise: Advanced expertise in polishing and buffing, including medical-grade finishes on cobalt chrome, titanium implant systems, and surgical instrumentation.
- Surface Finish Control: Capable of achieving surface finishes (up to 4 Ra) that meet stringent part requirements.
OnSite Equipment
PMI’s grinding and polishing operations are supported by:
- 3- and 4-axis CNC surface grinding machines with automated control for precision and repeatability.
- Blanchard grinding capacity up to 16” diameter for robust surface stock removal and preparation.
- Polishing and buffing stations configured for medical device and high-finish applications.
- Custom tooling and fixturing developed in-house to support part-specific setups.
Put Our Capabilities to Work
Contact PMI to discuss your CNC precision machining requirements and how we can support your project.