| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-row rolling bearing which equalizes application of thrust load in each row by making axial rigidities of outer ring spacers and an inner ring spacer equal to each other, and has a long service life in such a usage that thrust load acts.SOLUTION: In a multi-row rolling bearing 1, multi-row rolling bearing portions A, B, C, D having an equal axial rigidity are constituted of: a plurality of outer ring members 2A, 2B, 2C, on an inner circumferential part of which, outer ring raceways 2Aa, 2Ba, 2Bb, 2Ca are formed; a plurality of inner ring members 3A, 3B, on an outer periphery of which, inner ring raceways 3Aa, 3Ab, 3Ba, 3Bb are formed; and a plurality of rolling elements 4 freely rotatably interposed between the respective outer ring raceways 2Aa, 2Ba, 2Bb, 2Ca and the respective inner ring raceways 3Aa, 3Ab, 3Ba, 3Bb facing the outer ring raceways. The multi-row rolling bearing 1 has outer ring spacers 5A, 5B each interposed between axial intermediate portions of the plurality of outer ring members 2A, 2B, 2C and an inner ring spacer 6 interposed between axial intermediate portions of the plurality of inner ring members 3A, 3B. Axial rigidity of the outer ring spacers 5A, 5B and the axial rigidity of the inner ring spacer 6 are made equal to each other. |
