3 guide chamfers for particularly high accuracy and surface quality at tight hole tolerances. Asymmetrical tip geometry for very high metal removal rates. New generation of innovative high-performance drills for cast iron in the HPC field.
For HPC high performance drilling in castings. Outstandingly suitable for bainite cast iron (ADI).
Maximum drilling depth:
Flute length (see table) less 1.5×nominal ⌀.
Form HB and HE supplied at the same price as HA.
Form HB: order with No. 122690 + 129100HB .
Form HE: order with No. 122690 + 129100HE.