Bearing sleeves

Details Bearing sleeves Bearing sleeves

E - Fixed Constructions

21

B

308/46

E21B 4/02 (2006.01) E21B 4/00 (2006.01) F16C 33/22 (2006.01)

Patent

CA 1277696

S P E C I F I C A T I O N "Bearing Sleeves" ABSTRACT OF THE DISCLOSURE In order to support a mud-driven impeller of a down-hole turbogenerator in such a manner as to provide long bearing service life in the hostile conditions down-hole, a bearing sleeve is provided which comprises an outer shell of marine brass and an inner lining of nitrile rubber bonded to the inside surface of the shell. The lining extends axially beyond the end of the shell to form a portion proud of the end of the shell and turned over the end of the shell. This portion comprises radial lands separated by radial grooves, and the radial lands define axial bearing surfaces for cooperating with an axial bearing surface of a bearing member which the bearing sleeve surrounds in use.

533519

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