Ratio Drill | Ratio Drills| Ratio Drill Bits | Accusharp

Ratio Drills

Ratio Drills


  • Strong break point geometry
  • Reliable high quality hole
  • Smooth flute form
  • Tolerance achieved within 4 micron
  • High accuracy
  • Creates a true flat-bottom hole from outer diameter to center


  • Machining of mining bits
  • Heat-treatable steels


Mining bits are typically machined with a high ratio and ACCUSHARP is the perfect answer for this.

Accusharp makes ratio drills for drilling high accuracy holes with higher parameters for bits that demand high accuracy holes as tolerance is offered. There is no retract line and there is no burr folding. In flat-bottom drilling, eliminate the 180° end mill, geometry combinations are available to cover most common materials.