Attachment of bearing elements by deformation

F - Mech Eng,Light,Heat,Weapons – 04 – D

Patent

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Details

F04D 29/04 (2006.01) F04D 1/06 (2006.01) F04D 7/02 (2006.01) F04D 29/62 (2006.01)

Patent

CA 2448772

A method of installing an annular bearing element within a centrifugal pump utilizes a mechanical staking operation. The bearing element locates within a receptacle of a pump stage that is surrounded by a retaining wall. Once the bearing element is located within the retaining wall, the retaining wall is permanently deformed at various points against the bearing element. The bearing element, if of a hard wear resistant metal, may have flats for the circumferentially spaced apart deformations to locate within. The bearing element may be a thrust washer for transmitting downward thrust, or it may be a radial support bearing sleeve.

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