Patent ID: 8950515
Filing Date: 2015-02-10
Classification: E21B

Abstract:
1. A bit for subterranean use, comprising: a body comprising at least one head; at least one cone mounted to a corresponding head through a bore in said head with a retaining member extending in said bore, said cone comprising a plurality of roller bearings between said cone and an outer surface of said head and said roller bearings spaced apart from each other in a direction defined by a longitudinal axis of said retaining member; said retaining member contacting at least one said bearing for removal of axial play in said plurality of bearings in response to a mechanism for application of tension to said retaining member located remotely from the direct contact location of said retaining member to said at least one bearing within said cone, said retaining member pushing said bearings together against a stop in said cone when removing axial play.