To provide a hub unit bearing which can improve durability with respect to a stress amplitude caused by a rotation flexure load, with a simple structure, and a production method of the hub unit bearing.SOLUTION: A hub unit bearing comprises: an outer ring member which has a plurality of rows of outer ring orbital planes on its inner peripheral surface; an inner ring member which has a plurality of rows of inner ring orbital planes on its outer peripheral surface; and rolling bodies, the plurality of rolling bodies being provided on each row, between each outer ring orbital plane and each inner ring orbital plane. The inner ring member comprises: a hub ring; and an inner ring which is externally fitted and fixed to a small diameter step part formed on an inboard side end part of the hub ring. On a radial center part of an outboard side end surface of the hub ring, a bottomed recess part which is open toward the outboard side, is provided. On a radial center part of the bottom surface on an inboard side of the recess part, padding is protruded toward the outboard side.SELECTED DRAWING: Figure 1
【課題】簡易な構成で、回転曲げ負荷による応力振幅に対する耐久性を向上可能なハブユニット軸受及びハブユニット軸受の製造方法を提供する。【解決手段】ハブユニット軸受は、内周面に複列の外輪軌道面を有する外輪部材と、外周面に複列の内輪軌道面を有する内輪部材と、各外輪軌道面と各内輪軌道面との間に、各列毎に複数個ずつ設けられた転動体と、を備える。内輪部材は、ハブ輪と、ハブ輪のインボード側端部に形成された小径段部に外嵌固定された内輪と、を有する。ハブ輪のアウトボード側端面の径方向中央部には、アウトボード側に向かって開口する有底形状の凹部が設けられる。凹部のインボード側の底面の径方向中央部には、アウトボード側に向かって突出する肉盛りが設けられる。【選択図】図1
HUB UNIT BEARING AND PRODUCTION METHOD OF HUB UNIT BEARING
ハブユニット軸受及びハブユニット軸受の製造方法
2024-01-17
Patent
Electronic Resource
Japanese