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1. 发明申请

US20170211621A1 THRUST BEARING AND MANUFACTURING METHOD FOR SAME 审中-公开
公开(公告)号：US20170211621A1
公开(公告)日：2017-07-27
申请号：US15329650
申请日：2015-07-28
申请人： NSK LTD.
发明人： Masaki SADAMURA , Yuki SHIMPO , Hiromichi TAKEMURA , Yutaka KONDOU
IPC分类号： F16C19/30 , F16C33/46
CPC分类号： F16C19/305 , F16C19/10 , F16C19/30 , F16C33/3806 , F16C33/425 , F16C33/46 , F16C33/4605 , F16C33/543 , F16C33/547 , F16C33/58 , F16C33/588 , F16C43/04 , F16C2361/61
摘要： A thrust bearing includes: a retainer that is provided with a plurality of pockets; a plurality of rollers that are arranged so as to freely rotate inside the plurality of pockets; and at least one first race that has an annular-shaped first race section in which the plurality of rollers move. The first race is provided with a hook curl section that is formed by bending the first race section from an outer-diameter-side periphery thereof toward the inner-diameter side obliquely in the radial direction, and an outer peripheral surface of the retainer has a conical surface that is formed so as to be substantially parallel to an inner peripheral surface of the hook curl section. The inner peripheral surface of the hook curl section holds the retainer without separating therefrom by contacting the outer peripheral surface of the retainer in a sliding manner.

2. 发明申请

US20160281776A1 RETAINER FOR NEEDLE ROLLER BEARING, AND NEEDLE ROLLER BEARING 审中-公开
标题翻译：滚针轴承保持架和滚针轴承
公开(公告)号：US20160281776A1
公开(公告)日：2016-09-29
申请号：US15031349
申请日：2014-10-22
申请人： NSK LTD.
发明人： Koichi KITAMURA , Hiromichi TAKEMURA
IPC分类号： F16C19/46 , F16C33/66 , F16C33/54 , F16C33/56 , F16C33/46
CPC分类号： F16C19/463 , C23C22/08 , C23C22/18 , F16C33/4605 , F16C33/546 , F16C33/565 , F16C33/6677 , F16C33/6696 , F16C2361/61
摘要： A needle roller bearing retainer of the invention for supporting the planetary gear of a planetary gear mechanism rotatably includes an annular part and multiple pillar parts extending in the axial direction from the annular part, holds a roller between the adjoining pillar parts, and is used in an outer ring guide system, while a composite film containing phosphate and solid lubricant selected from soft metal-based solid lubricant and layer crystal structure material, or, a composite film containing phosphate and phosphorous compound having soft metal is formed at least on the outer peripheral surface of the retainer.
摘要翻译：用于支撑行星齿轮机构的行星齿轮的本发明的滚针轴承保持器可旋转地包括环形部分和沿轴向方向从环形部分延伸的多个支柱部分，将辊保持在邻接的柱部分之间，并用于外环导向系统，而含有选自软金属系固体润滑剂和层结晶结构材料的磷酸盐和固体润滑剂的复合膜，或者含有含有软金属的磷酸盐和磷化合物的复合膜至少形成在外周保持架的表面。

3. 发明申请

US20130130849A1 Rolling Bearing 审中-公开
标题翻译：滚动轴承
公开(公告)号：US20130130849A1
公开(公告)日：2013-05-23
申请号：US13736099
申请日：2013-01-08
申请人： NSK Ltd.
发明人： Hiromichi TAKEMURA , Yoshiaki Sakajiri
IPC分类号： F16H57/04
CPC分类号： F16H57/0489 , F16C19/06 , F16C33/58 , F16C2240/40 , F16C2240/60 , F16C2240/70 , F16C2240/76 , F16C2361/63 , F16H9/16 , F16H9/18
摘要： When a minimum thickness h of a part where an outer ring raceway is provided on a middle portion in the axial direction of an outer ring and a diameter Da of each rolling element satisfy the relationship 0.4Da≦h 0.8Da, even when the outer ring is fixed in a transmission case of low-rigidity, elastic deformation of the outer ring can be prevented without increasing the thickness of the outer ring. When an outer diameter D of an outer ring, a width W of this outer ring in the axial direction, a minimum thickness h of a part where the outer ring raceway is provided on a middle portion in the axial direction of the outer ring, and a diameter Da of each ball are controlled such that a value K calculated by {(h1.5·W)/(Da1.1·D0.5)} satisfies the relationship 1.20≦K≦2.00, sufficient rigidity of the outer ring can be maintained, and premature flaking based on elastic deformation of the outer ring can be prevented without needlessly increasing the size of the outer ring.
摘要翻译：当在外圈的轴向上的中间部分设置外圈滚道的部分的最小厚度h和每个滚动元件的直径Da满足关系0.4Da·h·0.8Da时，即使当外圈固定在低刚度的变速箱中，可以防止外圈的弹性变形而不增加外圈的厚度。当外圈的外径D，该外圈的轴向宽度W在外圈的轴向的中间部分设置有外圈滚道的部分的最小厚度h，以及控制每个球的直径Da，使得通过{（h1.5·W）/（Da1.1·D0.5）}计算的值K满足关系1.20 @ K @ 2.00，外圈的足够的刚性并且可以防止基于外圈的弹性变形的过早剥落而不用增加外圈的尺寸。

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