HSS-Co 8 Series Annular Cutters

Made in Germany

The made in Germany annular cutters from this series have outstanding heat resistance and wear protection. In combination with speed-controlled BDS magnetic core drilling machines, these annular cutters are suitable for machining fine-grained steels and rustproof materials. BDS recommends the BDS 5000 Cutting Oil for machining stainless steel.
  • High degree of heat resistance
  • Better wear protection
  • High cobalt content of 8%
  • Suitable for higher loads in fine-grained steels and rustproof materials
  • With 19 mm or 32 mm Weldon shank
  • Can be resharpened


The goal of this latest BDS product development was a performance-optimized core drill series with higher heat resistance and better wear protection. An increased cobalt content in special steel brought the desired results. In conjunction with speed-controlled BDS magnetic core drilling machines, these core drills are suitable for higher loads in fine-grained steels and stainless materials. The core drills can be reground, they retain their positive product properties.

HSS-Co 8 Series Annular Cutters
Made in Germany

Technical Specifications

 ShortLong
QualityHSS M42 MaterialHSS M42 Material
Article no.KBK-COKBL-CO
Cutting depth in mm3055
Diameter in mm12-13012-100
Weldon Shank19 mm (3/4″) / 32 mm (1 1/4″)19 mm (3/4″) / 32 mm (1 1/4″)
Ejector PinZAK 075 / ZAK 090ZAK 100 / ZAK 120
LubricantBDS 5000BDS 5000
Carbide Coating

Product Video of Annular Core Cutters

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