Jobber drills with straight shank DIN 338
Jobber drills with straight shank DIN 338
Jobber drills with straight shank DIN 338
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Long series <strong>straight</strong> <strong>shank</strong> <strong>drills</strong><br />
<strong>DIN</strong> 340<br />
Range of application<br />
Manufacturing specifications<br />
HSS<br />
Article no. 81320<br />
Type H<br />
R<br />
For drilling deep holes or for use <strong>with</strong> drill<br />
bushings in hard, crumbly materials such<br />
as brass, magnesium alloys, bronze,<br />
phosphor bronze, thin zamak and electron<br />
slate, mica, pertinax. With a special<br />
point grind eventually suitable for insulating<br />
materials, ebonite, bakelite, galalithe,<br />
celluloid, synthetic resins, horn<br />
compounds, eternit, hardboard, perspex,<br />
plastic laminates and plexiglas.<br />
For drilling of eternit and hardboard <strong>with</strong><br />
a modified point the direction of lamination<br />
is important to be considered i.e. for<br />
drilling at right angles to the laminations<br />
a point angle of 80-100° will give the best<br />
results otherwise a point angle of 140° is<br />
recommended.<br />
Point grinding: relieved cone<br />
Point angle: 118˚<br />
Web thinned: > Ø 14,00 mm to<br />
<strong>DIN</strong> 1412, form A<br />
Helix angle: smaller than standard<br />
Web thickness: standard<br />
Web taper: smaller than standard<br />
Flute form: wide<br />
Tolerance on Ø: h8<br />
Other manufacturing specifications to<br />
<strong>DIN</strong> 1414<br />
HSS<br />
Article no. 81330<br />
Type W<br />
R<br />
For drilling deep holes or for use <strong>with</strong> drill<br />
bushings in soft materials forming long<br />
stringy swarf, such as aluminium alloys,<br />
zinc, refined copper, silumin, electron,<br />
zamak, argalium, soft synthetic materials<br />
and wood.<br />
Point grinding: relieved cone<br />
Point angle: 130˚<br />
Web thinned: > Ø 14,00 mm to<br />
<strong>DIN</strong> 1412, form A<br />
Helix angle: greater than standard<br />
Web thickness: standard<br />
Web taper: none<br />
Flute form: wide<br />
Tolerance on Ø: h8<br />
Other manufacturing specifications to<br />
<strong>DIN</strong> 1414<br />
HSS<br />
Article no. 81350<br />
Type FW<br />
R<br />
A special drill for drilling deep holes in<br />
soft materials and those producing long<br />
stringy swarf <strong>with</strong> a max. hardness of<br />
500 N/mm 2 such as mild steel, aluminium,<br />
aluminium alloys, zinc, refined<br />
copper, silumin, electron, zamak, argalium,<br />
doft synthetic materials and wood.<br />
Point grinding: relieved cone<br />
Point angle: 130˚<br />
Web thinned: > Ø 2,36 mm to<br />
<strong>DIN</strong> 1412, form A<br />
Helix angle: greater than standard<br />
Web thickness: greater than standard<br />
Web taper: smaller than standard<br />
Flute form: very wide flutes <strong>with</strong><br />
„rolled-off“ heels<br />
Tolerance on Ø: h8<br />
Other manufacturing specification to<br />
<strong>DIN</strong> 1414<br />
bright<br />
92
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