A downhole bearing assembly

Details A downhole bearing assembly A downhole bearing assembly

E - Fixed Constructions

21

B

E21B 4/02 (2006.01) F16C 19/00 (2006.01)

Patent

CA 2068608

ABSTRACT OF THE DISCLOSURE An improvement in bearing configuration for taking axial loading in both directions in a bearing assembly having a first tubular member telescopically received within a second tubular member. The bearing configuration consists of a single thrust bearing assembly having a single thrust bearing positioned between a first annular member and a second annular member. The annular members are rotatably mounted on the first tubular member. The thrust bearing assembly is positioned between a first pair of shoulders adjacent the first annular member and a second pair of shoulders adjacent the second annular member. Each pair of shoulders have an inner annular shoulder on the first tubular member and an outer annular shoulder on the second tubular member. Axial loading in compression is transmitted by the outer annular shoulder of the second pair of shoulders to the second annular member, to the thrust bearing, to the first annular member and to the inner annular shoulder of the first pair of shoulders. Axial loading in tension is transmitted by the outer annular shoulder of the first pair of shoulders to the first annular member, to the thrust bearing, to the second annular member and to the inner annular shoulder of the second pair of shoulders.

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