Jobber drills with straight shank DIN 338

Range of application
Manufacturing specifications
HSS-E
Article no. 81441
Type FN
R
High heat-resistant drill with wide chip
space for very deep holes in difficult conditions,
such as when swarf congestion
hinders the flow of coolant to the drill
point or when tool over-heating arises
from other causes. (Not suitable for lubrication
holes in crankshafts - use special
purpose drill for this application)
For use in steels and cast steels of high
tensile strength, cast iron, malleable iron,
spheroidal iron, etc.
Point grinding: relieved cone
Point angle: 130˚
Web thinned: to DIN 1412, form A
Helix angle: greater than standard
Web thickness: condiderably greater
than standard
Web taper: none
Flute form: very wide flute with special
„rolled-off“ heels
Tolerance on Ø: h8
Other manufacturing specifications to
DIN 1414
HSS
Article no. 84425
Type FN
T
R
A robust tool for use in difficult drilling
conditions in extremely deep holes when
swarf congestion prevents an adequate
flow of coolant. For use in steels and cast
iron having a tensile strength of up to
1000 N/mm 2 .
Not recommended for nickel-chrome
steels or similar materials.
Point grinding: relieved cone
Point angle: 130˚
Web thinned: to DIN 1412, form A
Helix angle: greater than standard
Web thickness: condiderably greater
than standard
Web taper: none
Flute form: very wide flute with special
„rolled-off“ heels
Tolerance on Ø: h8
Other manufacturing specifications to
DIN 1414
97