| 摘要 |
A tapered roller bearing includes: inner and outer rings; tapered rollers; and a retainer for the tapered rollers so as to prevent the rollers from being removed towards an outer diameter side. The inner ring has a small collar portion having a reduced diameter section neighboring an inner ring raceway. The reduced diameter section has an outer diameter surface of a diameter smaller than the remaining section of the small collar portion. An outer diameter of the remaining section of the small collar portion is larger than an inscribed circle diameter, and an outer diameter of the reduced diameter section is smaller than the inscribed circle diameter, which represents a diameter of a circle inscribed in the tapered rollers in an assembly of rollers and retainer, where the tapered rollers are retained by the retainer and the assembly has not been incorporated into the inner ring. |
