Honing Stones

Honing stones are used for accurate and efficient honing of inner surfaces of holes.

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Recommendation of Honing Stones

Work material
Surface Roughness
Steel C less than 0.3% Steel C more than 0.3% Alloy Steel Stainless Steel
3.0-6.0S WA150-180RH70(+S)
QB180-220H(+S)
WA150-180RH60(+S)
QB180-220J(+S)
WA or MA80-150RH30(+S)
QB180-220H(+S)
WA180RH40(+S)
QB180-220I(+S)
1.5-3.0S WA220RH60(+S)
QB220J(+S)
WA220RH50(+S)
QB220J(+S)
WA220RH30(+S)
QB220I(+S)
WA220RH30(+S)
QB220I(+S)
0.8-1.5S WA320RH50(+S) WA280-320RH40(+S) GC280-320RH30(+S) GC280 RH2GC120M UP
0.2-0.8S WA800 RH90
GC320RH70
GC600 RH90
GC320RH60
GC600 RH30 GC600 RH10
GC120UP
Standard Cast Iron Special Cast Iron Aluminum Alloy Honing Allowance
GC120-180RH80(+S)
QB180-220K(+S)
GC120-150RH60(+S)
QB180-220J(+S)
GC80M UP 0.10-0.50
GC220RH70(+S)
QB220H(+S)
GC220RH50(+S)
QB220J(+S)
GC120M UP 0.05-0.10
GC320RH60 GC320RH40 GC220M UP 0.01-0.05
GC800 RH40
GC320RH70
GC800 RH30
GC320RH60
GC320M UP 0.01 or less

At a honing work, roughness of the surface finish differs greatly depending upon the honing machine and work condition. On selecting a honing stone, please inform of following items and consult thoroughly about the selection.

1. Workpiece

  1. Material
  2. Heat Treatment
  3. Shape and Dimension
  4. Honing Allowance
  5. Surface Roughness Requirement
  6. Crosshatch angle

2. Honing Machine

  1. Name of the machine
  2. Honing Oil

3. Working Conditions

  1. Rotation Speed (Operating Speed)
  2. Stroke Speed
  3. Grinding Pressure
  4. Work Timing