Bit holder

Details Bit holder Bit holder

E - Fixed Constructions

21

C

262/83

E21C 35/18 (2006.01) E21C 25/12 (1980.01)

Patent

CA 1074344

ABSTRACT OF THE DISCLOSURE The present invention provides a bit holder consisting of steel, said bit holder comprising a bore for accomodating the bit shaft and being welded to the cutting head of a cutting machine, characterized in that the bit holder consists of a part of heat- resistant steel of high strength and of a foot con- sisting of an unalloyed or low alloy steel of good weldability and being welded to said foot over the whole contacting area.

263447

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