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HOFFMANN – 122151

Description

GARANT Solid Carbide Jobber Drill Extra Stub GARANT, HOFFMANN

Technical specification

Technical Data

	122151 3.8	122151 3.5	122151 2.8	122151 2.5
Overall length L	55 mm	52 mm	46 mm	43 mm
Shank tolerance	h7	h7	h7	h7
Tolerance nominal ⌀	h7	h7	h7	h7
Flute length L_c	22 mm	20 mm	16 mm	14 mm
Number of cutting edges Z	2	2	2	2
Nominal ⌀ D_C	3.8 mm	3.5 mm	2.8 mm	2.5 mm
Feed f in steel < 1100 N/mm2	0.08 mm/rev.	0.08 mm/rev.	0.05 mm/rev	0.05 mm/rev
Standard	DIN 6539	DIN 6539	DIN 6539	DIN 6539
Shank ⌀ D_s	3.8 mm	3.5 mm	2.8 mm	2.5 mm
recommended maximum drilling depth L₂	16.3 mm	14.8 mm	11.8 mm	10.3 mm
Coating	TiAlN	TiAlN	TiAlN	TiAlN
Tool material	solid carbide	solid carbide	solid carbide	solid carbide
Type	N	N	N	N
Point angle	118 °	118 °	118 °	118 °
Helix angle	30 °	30 °	30 °	30 °
Shank	Parallel shank to h7	Parallel shank to h7	Parallel shank to h7	Parallel shank to h7
Through-coolant	no	no	no	no
Colour ring	without	without	without	without
Type of product	Jobber drill	Jobber drill	Jobber drill	Jobber drill

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