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Extra-long drill bit for deep hole drilling in hardened or high strength steel up to a strength of 850 N/mm², in cast iron and in composite materials (e.g. plastic profiles with steel core).
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Very good adhesion of cooling lubricants and reduced tendency to weld on
When using a drill bit in line with DIN 1869, the creation of a pilot hole of 1xD to 2xD depth is recommended. Our extra short precision drill bit in line with DIN 1897 (art. no. 062470…) is ideal for this task.
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