Article no.: 122690

Description

Version:

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.

Advantage:

For HPC high performance drilling in castings. Outstandingly suitable for bainite cast iron (ADI).

Recommendation:

Maximum drilling depth:
Flute length (see table) less 1.5×nominal ⌀.

Note:

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.

Technical Data

Coating
TiAlN
Tool material
Solid carbide
Drill depth up to
6×D
Point angle
135 degrees
Skaft
DIN 6535 HA to h6
Through-coolant
yes, with 25 bar
Machining strategy
HPC
Colour ring
white

Application Table

GG
K
110
GGG
K
90
GJS, ADI > 800N/mm²
K
70
wet maximum
 
wet minimum
 
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