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Gun drills with 2 cutting lips
Standard Type Tool illustration Drilling depth Tool material Surface Diameter range Guhring Discount Standard
no. group range.
page
Gun drills with 2 cutting lips ZB 80
Guhring ZB 80 Aluminium 30 x D Carbide 8.000 - 12.000 5019 123 29
std. 30 x D Carbide 8.000 - 12.000 5643 123 29
Guhring ZB 80 Cast materials
std.
Ex-stock range with 8.0/10.0/12.0 mm
for drilling depths up to 30 x D
with point grinds for cast materials and aluminium
point grind for cast materials point grind for aluminium
ZB 80 Gun drills with 2 cutting lips and carbide head ex-stock are The ZB 80’s special point grind realizes an optimal chip
a world’s innovation by Guhring, setting the standard again. break. However, this increase in machining speed is com-
Keep your production planning more flexible and your stock bined with a reduction in hole accuracy.This is also a direct
low. This way, not only your direct tooling costs are reduced consequence of a drill design with two cutting edges. As
but also your storage costs! the cutting edges are positioned opposite each other, there
The advantages: is less of a smoothing effect and less support in compari-
• very favourable prices even for small volume orders son to a single-fluted gun drill.
• available ex-stock with 24 hours Ex-stock gun drills ZB 80 have a driver to DIN 6535 HA.
• high cutting parameters
• a sensational price-performance ratio
The main advantage of two-fluted gun drills compared to We can naturally also produce any required gun drill as a
single-fluted gun drills is the substantially higher feed rate special tool especially suited to your application.
that can be applied during the production of the hole. This
is due to the design of the two-fluted gun drill, it has two
cutting edges and two flutes.
The dimensions required to calculate the length for conventional machine tools
head length
driver
d1
re-grind drilling depth min. distance driver length
1,5 x D flute length* 3xD
ZB 80 Aluminium Cast materials
Point grind
radius
130o 130o
SuperA
bright TiN
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