Drill bit

Details Drill bit Drill bit

B - Operations, Transporting

23

B

77/32

B23B 51/00 (2006.01) E21B 10/22 (2006.01) F16C 43/06 (2006.01)

Patent

CA 1052600

ABSTRACT OF THE DISCLOSURE A drill bit having a roller cutter supported by ball bearings and a ball retainer retained in position both axially and rotationally within the ball loading hole by a plug which is mechanically wedged into secured and sealed position within the outer end of the ball loading hole.

258940

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