To provide a bearing device for a wheel capable of suppressing vibration in direct advance and also improving a bearing life, and a method for manufacturing the bearing device for a wheel.SOLUTION: A bearing device 1 for a wheel has: an outer ring 2 with double row outside raceway surfaces 2c, 2d formed on its inner periphery; a hub ring 3 and an inner ring 4 respectively having double row inside raceway surfaces 3c, 4a facing the double row outside raceway surfaces 2c, 2d on their outer peripheral surfaces; and double row ball rows 5 and 6 accommodated so as to be rollable between both raceway surfaces of the outer ring 2, the hub ring 3 and the inner ring 4. With at least one of the double row outside raceway surfaces 2c and 2d or at least one of the double row inside raceway surfaces 3c and 4a attached to a vehicle body without any load, a diameter in the direction perpendicular to a direction in which gravity G is applied is larger than a diameter in the direction in which the gravity is applied.SELECTED DRAWING: Figure 2
【課題】直進時の振動を抑制するとともに軸受寿命を向上させることができる車輪用軸受装置および車輪用軸受装置の製造方法を提供する。【解決手段】内周に複列の外側軌道面2c・2dが形成された外輪2と、外周面に、複列の外側軌道面2c・2dに対向する複列の内側軌道面3c・4aが形成されたハブ輪3および内輪4と、外輪2とハブ輪3および内輪4との両軌道面間に転動自在に収容された複列のボール列5・6と、を有する車輪用軸受装置1であって、複列の外側軌道面2c・2dの少なくとも一つ、または複列の内側軌道面3c・4aの少なくとも一つが、無負荷の状態で、車体に取り付けられる姿勢において重力Gが加わる方向の直径よりも重力が加わる方向に垂直な方向の直径が大きい。【選択図】図2
BEARING DEVICE FOR WHEEL AND METHOD FOR MANUFACTURING BEARING DEVICE FOR WHEEL
車輪用軸受装置および車輪用軸受装置の製造方法
2020-08-13
Patent
Elektronische Ressource
Japanisch
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