Countersinks have a tapered blade geometry.
The most common versions are here: 60°, 90° and 120°. They are used for lowering, deburring and chamfering.
60 ° countersink be used for trimming boreholes. DIN 334 Form C HSS / HSSE
The GSR countersink are produced according to the latest methods and ground with CBN wheels (CBN = cubic boron nitride), giving us a high surface quality,
Sharpness and longer service life compared to traditional ground-lowering guaranteed.
We offer the countersink in two quality levels:
HSS-G: (high speed steel ground)
HSSG TIN: (The TiN coating is for years the first choice for the coating of cutting tools and has established itself as an "all round" Finish The.
Coating is achieved a reduction in the friction coefficient and the tendency to galling.)
For the machining of aluminum, a TiN coated countersink is recommended that remain otherwise glue the aluminum chips
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