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.
Attention:
Sizes ending with X = cutter ? tolerance h7.
Note:
Flute length LC = L2 + 1.5 × DC.
Form HB and HE supplied at the same price as HA.
Form HB: order with No. 122661.
Form HE: order with No. 122659 + 129100HE.
Standard: DIN 6537 L
Tolerance nominal ?: m6
Number of cutting edges Z: 2
Tolerance nominal ?: m6
recommended maximum drilling depth L2: 6.7 mm
Overall length L: 55 mm
Shank ? Ds: 4 mm
Feed f in stainless steel > 900 N/mm2: 0.02 mm/rev.
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.
Attention:
Sizes ending with X = cutter ? tolerance h7.
Note:
Flute length LC = L2 + 1.5 × DC.
Form HB and HE supplied at the same price as HA.
Form HB: order with No. 122661.
Form HE: order with No. 122659 + 129100HE.
Standard: DIN 6537 L
Tolerance nominal ?: m6
Number of cutting edges Z: 2
Tolerance nominal ?: m6
recommended maximum drilling depth L2: 6.7 mm
Overall length L: 55 mm
Shank ? Ds: 4 mm
Feed f in stainless steel > 900 N/mm2: 0.02 mm/rev.
