Description
Version:
Drilling and reaming in a single operation. Cutting chisel edge with high centring accuracy due to strong core and special point geometry. Particularly high alignment accuracy due to 4 guide chamfers.
Advantage:
Very tight manufacturing tolerances with H7 fit can be produced without additional reaming.
Note:
Flute length LC = L2 + 1.5 × DC.
Solid carbide precision fit drills for machining aluminium available on request.
Form HB and HE supplied at the same price as HA.
Form HB: order with No. 122790 + 129100HB .
Form HE: order with No. 122790 + 129100HE.
Machining strategy: HPC
Tolerance: H7
Standard: DIN 6537 L
Number of cutting edges Z: 2
Tolerance: H7
recommended maximum drilling depth L2: 46 mm
Overall length L: 103 mm
Shank ? Ds: 10 mm
Feed f in steel < 900 N/mm2: 0.28 mm/rev.
Drilling and reaming in a single operation. Cutting chisel edge with high centring accuracy due to strong core and special point geometry. Particularly high alignment accuracy due to 4 guide chamfers.
Advantage:
Very tight manufacturing tolerances with H7 fit can be produced without additional reaming.
Note:
Flute length LC = L2 + 1.5 × DC.
Solid carbide precision fit drills for machining aluminium available on request.
Form HB and HE supplied at the same price as HA.
Form HB: order with No. 122790 + 129100HB .
Form HE: order with No. 122790 + 129100HE.
Machining strategy: HPC
Tolerance: H7
Standard: DIN 6537 L
Number of cutting edges Z: 2
Tolerance: H7
recommended maximum drilling depth L2: 46 mm
Overall length L: 103 mm
Shank ? Ds: 10 mm
Feed f in steel < 900 N/mm2: 0.28 mm/rev.
