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Outside diameter (OD) grinding. This precision machining process is essential for achieving accurate dimensions and surface finishes on the outside of your cylindrical or conical workpieces. Whether you’re working with aerospace components, shafts, housings, assemblies, or other intricate parts, OD grinding offers high speed material removal and ultimate precision.

What Is OD Grinding?

  • Outside diameter grinding OD grinding involves using a cylindrical grinding wheel to remove material from the outer surface of a cylindrical workpiece.
  • The workpiece rotates around its true center axis, whether held between centers, in a chuck or a fixture, while the grinding wheel removes material from the outer surfaces of the workpiece.
  • The surfaces that are ground are concentric to the axis of rotation.
  • The type of external features being ground can range from simple cylindrical surfaces to more complex profiles required for applications like engine shafts, fuel delivery, compressed air profiles, and high pressure hydraulic systems.
  • Aerospace, defence, and commercial assemblies that require rotating components to fit precisely and spin at high speeds with little to no vibration require the close tolerances that OD grinding can achieve.

Tolerances:

  • Your workpiece requires the tight tolerance control and precision that the grinding process can produce.
  • Typical tolerances achieved include:
    *External part diameters: From 0.0170″ to 13.7″ (0.432 to 347.98 mm)
    *Parts lengths: Up to 60″ (1500 mm)
    *Roundness: 0.000015″ (0.00038 mm)
    *Close tolerance ± .000050″ (0.0013 mm)

Applications

OD grinding is used for various aerospace parts, including:

  • Bearings, bushings, and races
  • Aerospace components
  • Turbomachinery shafts
  • Mounting Flanges
  • Pistons
  • Seals
  • Chrome, nickel, & carbide metal sprayed components