Solid carbide HPC co-pilot drill, plain shank DIN 6535 HA 20×D TiAlN

Article no.: 123691
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  • Tool material: Solid carbide
  • Version: 20×D
  • Point angle: 138
  • Shank: DIN 6535 HA to h6
  • Through-coolant: yes, with 40 bar

Description

Version:

Helical fluted, with 4 guide chamfers and internal coolant holes. New generation of high performance co-pilot drills in the HPC range. With 138° point angle and special j6 cutting edge tolerance for optimum generation of a co-pilot hole. High roundness and alignment accuracy of the co-pilot hole.

Note:

Flute length LC = L2 + 1.5 × DC.
To achieve good process reliability with 40×D and 50×D deep hole drills, it is absolutely essential to drill a pilot hole to the maximum drilling depth with a pilot drill No. 122736 and a 20×D co-pilot hole with a co-pilot drill No. 123691.
The generation of a pilot hole improves process reliability. See also pages 140/141.

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