BXA30 / BXA40


Coated CBN grade for hardened steel

Provides high quality surface on hardened steel parts, when using extremely light depths-of-cut

Applications & Features

External turningInternal turning

1. Grade properties

  • BXA30: Ultra-fine cBN grain uniquely designed for superior adhesion with the PVD coating provides exceptional wear resistance and eliminates built-up edge, delivering excellent surface quality and tool life predictability.
  • BXA40: Thanks to the cBN substrate being formulated for superior adhesion with the coating, edge chipping is significantly reduced for extended tool life during interrupted cuts using extremely light depths-of-cut and low feed rates.

2. Application area




  • Coated CBN grade for high quality surface finishing


  • Coated CBN grade ideal of extremely light D.O.C.

Practical examples

Part: Machine parts (Ring)
Material: SCM435H / 34CrMo4 (63HRC)
Insert: 2QP-DCGW11T304
Grade: BXA30
Cutting conditions: Vc = 200 (m/min)
f = 0.06 (mm/rev)
ap = 0.08 (mm)
Coolant: Wet
Part: Bearing parts
Material: SUJ2 / B1 (60HRC)
Insert: 2QP-DCGW11T304
Grade: BXA30
Cutting conditions: Vc = 167 (m/min)
f = 0.03 (mm/rev)
ap = 0.05 (mm)
Coolant: Wet
Part: Sleeve
Material: SCM415H (58HRC)
Insert: 3QP-TPGW110304
Grade: BXA40
Cutting conditions: Vc = 120 (m/min)
f = 0.1 (mm/rev)
ap = 0.03 – 0.05 (mm)
Coolant: Wet

Standard cutting conditions

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