COMB-SHAPED CAGE FOR DOUBLE ROW ROLLER BEARING, AND DOUBLE ROW ROLLER BEARING

摘要

PROBLEM TO BE SOLVED: To provide a comb-shaped cage for a double row roller bearing supporting a shaft rotating at a high speed, capable of suppressing shortage of grease in an early period.SOLUTION: A comb-shaped cage for roller guide or outer ring guide, is incorporated in a double row roller bearing, and retains a plurality of rollers in each row. The comb-shaped cage includes an annular portion 10 and a plurality of pillar portions 20, and a groove (first groove 13) for retaining grease, is formed on a part of a cage inner face 9 including an inner peripheral face 12 of the annular portion 10 and faces 21 at a radial inner side of the pillar portions 20.