Description
Version:
3-flute drill, specially developed for use at very high feed rates. Outstandingly suitable for machines with high installed power and stable operating conditions.
The sector-leading technology of the drill point guarantees optimum self-centring behaviour. 3 guide chamfers guarantee a stable exit from the hole and an exact roundness of the hole.
Note:
Flute length LC = L2 + 1.5 × DC.
For process reliability when using the 12×D drill, an initial centre drilling with an NC spotting drill No. 121130 with 155° point angle is necessary.
Standard: Manufacturer's standard
Tolerance nominal ?: h7
Number of cutting edges Z: 3
Tolerance nominal ?: h7
recommended maximum drilling depth L2: 105 mm
Overall length L: 162 mm
Shank ? Ds: 10 mm
Feed f in steel < 1100 N/mm2: 0.44 mm/rev.
3-flute drill, specially developed for use at very high feed rates. Outstandingly suitable for machines with high installed power and stable operating conditions.
- Special cutter geometry with stable cutting edges and large clearance at the centre enables very high feed rates.
- The patented tip is optimised for chip flow and generates low cutting pressure with good chip breakage.
The sector-leading technology of the drill point guarantees optimum self-centring behaviour. 3 guide chamfers guarantee a stable exit from the hole and an exact roundness of the hole.
Note:
Flute length LC = L2 + 1.5 × DC.
For process reliability when using the 12×D drill, an initial centre drilling with an NC spotting drill No. 121130 with 155° point angle is necessary.
Standard: Manufacturer's standard
Tolerance nominal ?: h7
Number of cutting edges Z: 3
Tolerance nominal ?: h7
recommended maximum drilling depth L2: 105 mm
Overall length L: 162 mm
Shank ? Ds: 10 mm
Feed f in steel < 1100 N/mm2: 0.44 mm/rev.
