Internal Grinding CBN Wheel "XAP Wheel"

Grinding and Polishing Tools

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Internal Grinding CBN Wheel “XAP Wheel”

The XAP Wheel is a vitrified-bond CBN wheel that demonstrates the stable, high-accuracy grinding after dressing, and is developed for high-efficiency internal grinding.


  • Cutting ability can be improved by lower grinding resistance.
  • Significant improvement in grinding precision with stable cutting.
  • High-efficiency grinding is achieved.


  • Grinding bore and seat face of fuel injection.
  • Grinding track and the internal diameter of ball bearings.

Wheel Structure and Cross-section

Structural Image
  • Standard wheel
    Standard wheel
  • XAP Wheel
    XAP Wheel
Cross-sectional photographs
  • Standard wheel
    Standard wheel
  • XAP Wheel
    XAP Wheel
Grinding data

Standard products (CB325M180VN1)

XAP (CB325M180VXAP1)

Wheel size 25D × 14T × 11H
Machine Internal grinder
Wheel speed 45 m/s
Workpiece SUJ-2
Workpiece size o29.7H×13T
Workpiece speed 1.25 m/s
Grinding efficiency 0.3 m3/m-s
  • Roughness Ra
  • After dressing
Wheel wear