公开(公告)号：US20030026510A1

公开(公告)日：2003-02-06

申请号：US10190837

申请日：2002-07-09

Applicant: NSK LTD.

Inventor： Hiroshi Ishiwada ,  Mamoru Aoki ,  Seizou Miyazaki ,  Taikou Nawamoto ,  Hirotoshi Aramaki

IPC: F16C019/04

CPC classification number: F16C43/04 ,  F16C19/06 ,  F16C19/547 ,  F16C19/56 ,  F16C25/083 ,  F16C33/416 ,  F16C33/6607 ,  F16C35/12 ,  F16C41/008 ,  F16C2240/40 ,  F16C2240/42

Abstract: In a bearing apparatus which are composed of two bearings each including a crown-shaped retainer and also in which a lubricant is filled into raceways formed in the two bearings, not only a preload is applied from the retainer pocket opening side end face of an inner ring but also a preload is applied from the retainer pocket counter-opening side end face of an outer ring.

Abstract translation: 在由两个轴承组成的轴承装置中，每个轴承包括冠形保持器，并且其中润滑剂填充到形成在两个轴承中的滚道中，不仅从内侧的保持器口开口侧端面施加预载荷 并且还从外圈的保持器口袋开口侧端面施加预载荷。

公开(公告)号：US20020118900A1

公开(公告)日：2002-08-29

申请号：US09977191

申请日：2001-10-16

Applicant: NSK LTD.

Inventor： Toru Takamizawa ,  Mamoru Aoki ,  Takayuki Miyagawa ,  Hiroshi Ishiwada ,  Hirotoshi Aramaki

IPC: F16C019/00

CPC classification number: F16C19/54 ,  F16C19/06 ,  F16C33/585 ,  F16C2240/76 ,  F16C2370/12

Abstract: In the ball bearing, the ratio of the radius of curvature of an inner race raceway 4 to the outside diameter of balls 8, 8 is set in the range of 0.51 to 0.54. Also, the ratio of the radius of curvature of an outer race raceway 6 to the outside diameter of balls 8, 8 is set in the range of 0.54 to 0.56. Further, an interior geometric clearance c is set at 13 nullm or less. Thanks to these specifications, the balls 8, 8 can be prevented from running up onto the edge of the outer race raceway 6.

Abstract translation: 在球轴承中，内圈滚道4的曲率半径与滚珠8,8的外径的比率设定在0.51〜0.54的范围内。 此外，外圈滚道6的曲率半径与滚珠8,8的外径的比率设定在0.54〜0.56的范围内。 此外，内部几何间隙c设定为13μm以下。 由于这些规格，可以防止滚珠8,8向上跑到外圈滚道6的边缘上。

公开(公告)号：US20020172441A1

公开(公告)日：2002-11-21

申请号：US10097596

申请日：2002-03-15

Applicant: NSK LTD.

Inventor： Mamoru Aoki ,  Hiroshi Ishiwada

IPC: F16C033/32

CPC classification number: G11B19/2009 ,  F16C33/30 ,  F16C33/64 ,  F16C2370/12

Abstract: Between an inner raceway formed in the outer peripheral surface of an inner ring and an outer raceway formed in the inner peripheral surface of an outer ring, there are interposed a plurality of rolling elements. The inner ring, outer ring and rolling elements are respectively made of high carbon chromium steel, and at least one of the inner ring and outer ring is carbonitrided so as to set the surface hardness of at least one of the inner raceway and outer raceway for HRC58 or higher.

Abstract translation: 在形成于内圈的外周面的内滚道与形成在外圈的内周面的外滚道之间插入有多个滚动体。 内圈，外圈和滚动元件分别由高碳铬钢制成，并且将内圈和外圈中的至少一个碳氮共渗，以将内滚道和外滚道中的至少一个的表面硬度设定为 HRC58以上。