For Differential Case

• 
  For Ring Gear Mounting Hole Drilling

  High-efficiency Drills

  2x conventional feed rate f = 0.4 to 0.5mm/rev possible

  • Our proprietary low-resistance cutting edge design realises high-efficiency drilling.
  • High efficiency reduces power consumption by about 40%, contributing to energy savings toward SDGs.

• 
  SumiReamer

  SSR series

  •A balanced design that combines sharpness and cutting edge strength, to achieve high feed rate of f=1.6mm/rev.

  Diameter: ø2.97 to 12.0mm

• 
  Roughing

  For Cast Iron Turning Grades AC4000K series
• 
  Finishing

  For Ductile Cast Iron Turning Coated SUMIBORON BNC500

• 
  Internal Diameter Finishing

  SumiReamer SR series

  Diameter: ø11.9 to 140.6mm

Available sizes: Consult us (actual sizes supported so far: ø35 to 64mm)
Required tolerance range for spherical surface is 90 μm or below

• 
• 
  Lay-flat Insert type

  • Ideal for small differential case machining.

• 
  Tangential Insert type

  • Tangential mounting increases insert rigidity, ideal for high-feed and highefficiency machining.

Available sizes: Consult us (Actual sizes supported so far: ø48 to 100mm)

• Special cutter for dedicated machines achieves outstanding mass production performance.
• High-precision cutter body and ground type insert support stringent machining accuracy.
• Highly economical with indexable inserts.