HSS DRILLS

• various cutting materials: HSS, HSS cobalt and powder steel
• in various lengths: DIN 1897, 338, 340, 1869
  DIN 345, 346, 341, 1870
• in different types:
  With cylindrical shank and
  with morse taper shank
• with different point shapes and different coating options

Subland twist drills with straight shank for drilling clearance holes – accuracy class “medium” – according to ISO 273, with the simultaneous screw-head counterboring (90°) of the shapes A and B (accuracy class “medium”) according to DIN 74, Part 1. The cutting speed is governed by the larger diameter but the feed must suit the smaller.

HSS centre drills:

Centre-drills for the production of centre holes according to DIN 332 sheet 1, form R (with radius form).

NC-centre drills:

5% cobalt alloyed NC-drills for precise and fast drilling-work, for centering and chamfering of center-holes.

For ferrous and non-ferrous metals, plastics hard. For drilling in pre-drilled borings to obtain a high quality surface and an optimum longitudinal exactness. High efficiency in individual and mass production