Description
Version:
Cutting chisel edge with high centring accuracy due to strong core and special point geometry. High roundness and alignment accuracy of the deep hole, thanks to 4 guide chamfers. Outstanding chip evacuation due to 4 internal cooling channels from ⌀ 3.8 mm. Up to 3.7 mm ⌀ with 2 internal cooling channels. Straight major cutting edges with honed edges and special flute profile for short chips, even on long chipping materials.
Recommendation:
Maximum drilling depth:
Flute length (see table) less 1.5×nominal ⌀.
Flute length (see table) less 1.5×nominal ⌀.
Attention:
Sizes ending with X = cutter ⌀ tolerance h7.
Note:
Form HB and HE supplied at the same price as HA.
Form HB: order with No. 122661.
Form HE: order with No. 122659 + 129100HE.
Form HB: order with No. 122661.
Form HE: order with No. 122659 + 129100HE.
