Hollow drilling tool

Details Hollow drilling tool Hollow drilling tool

E - Fixed Constructions

21

B

77/36

E21B 10/48 (2006.01) B24D 99/00 (2010.01) B28D 1/04 (2006.01)

Patent

CA 2008169

A hollow drilling tool is made up of an axially extending tubular carrier part, a cutting body at one end of the carrier part, and guide elements located in the axial direction of the carrier part between the cutting body and the carrier part. The radially outer surface of each guide element is in alignment in the axial direction of the carrier part with the radially outer surface of the cutting body. The guide elements guide the hollow drilling tool in a borehole formed by the cutting body.

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