TAPERED ROLLER BEARING

摘要

PROBLEM TO BE SOLVED: To provide a tapered roller bearing capable of controlling the gap between the major end of each roller and the inner ring larger flange at the time of no load while the bearing dimensions are taken into consideration, reducing the interfering force between a retainer and the roller for different bearing dimensions, and enhancing the lifetime of the retainer. SOLUTION: The tapered roller bearing is composed of an inner ring 1 having a larger flange 1b, an outer ring 2, a plurality of tapered rollers 3 interposed between the raceway surfaces s1a and 2a of the inner 1 and outer rings 2, and a retainer 4. This should be designed so that the retainer stressσdetermined from the formula becomes one fifth of the fatigue limit of the retainer material, whereδis the clearance between the roller major end face and the inner ring larger flange 1b when the tapered roller 3 has moved nearest to the minor diameter side, r1is the mean diameter of the inner ring raceway surface 1a,αis the inclining angle of the rotational axis of the roller 3,μmis the maximum traction factor of the lubricating oil, smis the slip ratio to exhibit the maximum traction factor, C is the static rated load, Z is the number of rollers, and A is the section area of the retainer ring portion. COPYRIGHT: (C)2005,JPO&NCIPI