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公开(公告)号:US08905645B2
公开(公告)日:2014-12-09
申请号:US13622539
申请日:2012-09-19
申请人: NTN Corporation
发明人: Kazuo Komori , Yasushi Shibata
CPC分类号: F16C33/58 , B60B27/00 , F16C19/186 , F16C33/583 , F16C33/768 , F16C33/7879 , F16C2240/30 , F16C2240/40 , F16C2326/02
摘要: A wheel bearing apparatus has an outer member, an inner member, and double row rolling elements are contained between the outer raceway surfaces. Seals are mounted in openings formed between the outer member and the inner member. A shoulder height H of the inner raceway surface of the inner ring is set with a range of 0.4-0.8 times a diameter “d” of the ball (H/d=0.4-0.8). A shoulder height δ of a smaller diameter portion formed on the outermost circumference of the inner ring is set to a value δ/d≧0.35. A corner, formed by the tapered surface and the inner raceway surface, is rounded to have a circular arc cross-section. A shoulder height H1 of the inner raceway surface from its bottom to the corner is set within a range of 0.40-0.50 times a diameter of the ball (d) (H1/d=0.40-0.50).
摘要翻译: 车轮轴承装置具有外部构件,内部构件和双列滚动元件容纳在外部滚道表面之间。 密封件安装在形成在外部构件和内部构件之间的开口中。 内圈的内滚道表面的肩高度H设定为球直径“d”的0.4-0.8倍的范围(H / d = 0.4-0.8)。 形成在内圈的最外周上的较小直径部的肩高δ设定为δ/d≥0.5的值。 由锥形表面和内滚道表面形成的角部被圆形以具有圆弧形横截面。 内滚道表面从底部到角部的肩部高度H1设定在球直径(d)(H1 / d = 0.40-0.50)的0.40-0.50倍的范围内。
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公开(公告)号:US09623703B2
公开(公告)日:2017-04-18
申请号:US14452881
申请日:2014-08-06
申请人: NTN Corporation
发明人: Yasushi Shibata
IPC分类号: B60B27/00 , F16C33/66 , F16C33/78 , F16J15/324 , F16C19/18 , C10M169/02 , C10M115/08
CPC分类号: B60B27/0073 , B60B27/00 , B60B27/0005 , B60B2380/73 , B60B2900/321 , B60B2900/511 , B60B2900/561 , C10M115/08 , C10M169/02 , C10M2203/1006 , C10M2207/1256 , C10M2215/1026 , C10N2210/01 , C10N2220/022 , C10N2230/06 , C10N2250/10 , F16C19/186 , F16C33/6633 , F16C33/7826 , F16C33/7873 , F16C33/7879 , F16C2326/02 , F16J15/324
摘要: A vehicle wheel bearing apparatus has an outer member, an inner member, double row rolling elements, and seals. At least one seal of the seals has a metal core press-formed from steel sheet with a cylindrical fitting portion. A radial portion extends radially inward from the end of the fitting portion. A sealing member with a plurality of sealing lips is integrally adhered to the fitting portion of the metal core. Bearing grease is contained within the bearing. Sealing grease is applied to the sealing lips. Both the bearing grease and the sealing grease use the same thickener and the worked penetration of 350 or less. The kinematic viscosity of the base oil of the sealing grease at 40° C. is set to 70% or less of the kinematic viscosity of the base oil of the bearing grease at 40° C.
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