Twist drills with coolant duct, flute length to company standard

Catalog-No.
255
Web thinning ≥ Ø 8.000 • relieved cone • special point geometry with 170° point angle and 90° centre point • very good self-centering • axial and radial coolant supply through morse taper shank (similar to DIN 228 form BK) • opening and closing the necessary coolant supply possible with the supplied screw
P M K N S H
ISO code

P Steel, high-alloyed steel
M Stainless steel
K Grey cast iron, spher, graphite/mall. cast iron
N Aluminium and other non-ferrous metals
S Special, super and titanium alloys
H Hardened steel and chilled cast iron
On the following programme pages you will find for every tool recommendations regarding suitability for the application groups and details of max. tensile strength and harness:
optimal suitability
limited suitability
optimised for the machining of steel beams on beam drill-saw lines • steel and cast steel, grey cast iron • austenitic steels up to 800 N/mm²
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