NAGEL·AOBA PRECISION Specializes in Honing Technology

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Honing Technology

Specializes in Honing Technology

Target workpiece

Automobile & motorcycle

Small multipurpose engine
Multipurpose engine
Multicylinder engine
Connecting rod
Rocker arm
Master cylinder, etc.

Marine vessel

Liner & sleeve for large-size vessel


Landing gear
Various kinds of bearings


Wheels & bearings

Industrial instrument

Multiple manifold, etc.

Electric appliance

Freezer cylinder
Freezer slider
Freezer frame, etc.

Hydraulic equipment

Gear pump
Hydraulic valve body

What is Honing Process?

“HONING” is a kind of grinding processes to grind the inside wall of the workpiece (metal like cast iron or aluminum is common.) by abrasive stones. Pushing multi-stones set into the honing head of the tool against the inside wall and grinding the surface by rotating and stroking the tool with showering honing oil on it.

Honing theory

The Aim and Features of Honing
  • Improve roundness or cylindricity of the pre-processed cylinder.
  • Desired roughness of the surface is attained by using different grit size stones properly.
  • High-efficiency grinding is realized through sheet-like honing by using multi-stones.
  • Honing along the pre-processed bores does not need accurate workpiece positioning against honing axis.
  • Difficult long bore inside honing is practicable.
  • The proper crosshatch that works as a groove for fixing oil on the cylinder surface can be formed by desired angle and depth.

Bore Error Examples/Crosshatch Example