Patent ID: 7036989
Filing Date: 2006-05-02
Classification: F16C,F16H

Abstract:
1. A roller bearing oil feed device comprising an outer ring, a first inner ring and a second inner ring and a plurality of rolling elements, arranged in a plurality of rows in the axial direction between said outer ring and said first and second inner rings, and a ring-shaped spacer being interposed between said first and second inner rings, the spacer having inner and outer circumferential faces and opposed outside axial faces, wherein said first and second inner rings and said spacer are configured to be fitted onto a rotary shaft, the outside axial faces of said spacer abut said first and second inner rings, respectively, a circumferential groove is provided in the inner circumferential face of said spacer and an oil feed passage comprising an inlet opening into said circumferential groove for passage of oil along inner circumferential face and at least one axial face to an outlet opening at a corner of said spacer where at least one of the outside axial faces of said spacer and the outer circumferential face of said spacer meet is provided in said spacer.