Carbide Micro Drills for Precise Hole Making

The carbide micro drills come with internal and external coolant capability.

Walter DB131 Supreme (top) and DB133 Supreme solid carbide micro drills
Walter DB131 Supreme (top) and DB133 Supreme solid carbide micro drills
Walter Tools

Walter (Greer, SC) expanded its solid carbide micro drill line with the addition of the DB131 Supreme micro pilot drill sizes and extended the DB133 Supreme micro drill offering to deep drills up to 30 x Dc.

This new drill design is effective for applications in the medical, watchmaking, general mechanical engineering, mold and die making, energy and automotive industries. 

These new drills help achieve:

  • Maximum process reliability
  • Minimal dimensional variations
  • Extended tool life in steel, cast iron, nonferrous, super alloys, hard materials and other materials (ISO P, K, N, S, H and O)

Features include:  

  • 140° point angle on DB133 Supreme micro drill 
  • 150° point angle on DB131 Supreme micro pilot drill 
  • Ability to use emulsion, oil or minimum quantity lubrication (MQL) as a coolant
  • Diameter range of 0.020-0.116 in. (0.5-2.95 mm) for DB133 drills without internal coolant
  • Diameter range of 0.028-0.116 in. (0.7-2.95 mm) for micro drills with internal coolant
  • Length to diameter ratios (L/D) of 5, 8, 12, 16, 20, 25 and 30 × Dc for micro drills with internal coolant
  • 5 and 8 × Dc without internal coolant

walter-tools.com

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