What Is Microfinishing (Superfinishing)?

What Is Microfinishing?

Microfinishing (superfinishing) is the ultimate abrasive process, allowing users to:

  • Remove the amorphous surface layer (thermally damaged) caused by grinding
  • Obtain very consistent surface finishes with predictable and repeatable results
  • Achieve virtually any surface finish - Ra, Rz, Rt, Rpk, Bearing Area
  • Eliminate microscopic burrs left by grinding
  • Remove grinding-induced defects such as noise, factettes, chatter
  • Improve geometry - roundness, flatness
  • Improve part function efficiency, reduce noise and friction


  • Imparts superior surface finishes and geometry characteristics
  • Removes chatter and lobing generated from pre-process operations
  • Oil seal surfaces created by removing feed marks and creating micro-annular groves.
  • Deburrs oil holes creation of
  • Removes ferrite caps
  • Mirror finishes (Less than .01 Ra um)
  • Assures lower warranty costs
    • No component "break in" required
    • Reduction in oil film thickness
    • Lower friction allowing higher performance
    • Higher component efficiencies
    • Removal of ferrite caps in nodular iron parts