| 摘要 |
An outer peripheral surface (11b) of an inner ring (11) extends straight along outer peripheral surfaces of tapered rollers (13), and is open at a front side of a tapered roller bearing (10) which is a lubricating oil (L) supply side. A smaller-diameter end portion of a cage (14) is cut in a radial direction to be open. A hole retaining ring (40) is disposed at a back face side (11c) of the inner ring (11) which is a lubricating oil discharge side, and is fixed at its outer peripheral portion to an inner peripheral portion (12a1) of an extension portion (12a) of an outer ring (12). An inner diameter (D2) of the hole retaining ring is larger than an outer diameter (D1) of a larger rib portion of the inner ring. |
