Technical data:
Series:Master Steel
Nominal ⌀ DC:6.9 mm
Coating:TiAlN
Tool material:solid carbide
Standard:DIN 6537
Version:6×D
Tolerance nominal ⌀:h7
Number of cutting edges Z:3
Point angle:145 degrees
recommended maximum drilling depth L2:42.7 mm
Shank:DIN 6535 HA to h6
Through-coolant:yes, with 25 bar
Machining strategy:HPC
Semi-Standard:yes
Flute length Lc:53 mm
Overall length L:91 mm
Shank ⌀ Ds:8 mm
Feed f in steel < 1100xa0N/mm2:0.37 mm rev. Colour ring:green Type of product:Jobber drill 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.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.With 145° tip angle for low burr formation when drilling through holes.The sector-leading technology of the chisel edge guarantees optimum self-centring behaviour and permits spot drilling on irregular surfaces. 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.Form HB and HE supplied at the same price as HA.Form HB: order with No. 122726.Form HE: order with No. 122725 + 129100HE.