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：US20010053254A1

公开(公告)日：2001-12-20

申请号：US09931929

申请日：2001-08-20

Applicant: NSK LTD.

Inventor： Hiromitsu Muraki ,  Hiroshi Tani ,  Takashi Seshimo ,  Toru Takamizawa

IPC: F16C019/00

CPC classification number: F16C19/54 ,  F16C11/04 ,  F16C25/06 ,  F16C33/6603 ,  F16C33/6648 ,  F16C2370/12

Abstract: A rolling bearing according to the present invention comprises an inner race 29, an outer race 31 and a plurality of balls 37 disposed therebetween. The inner race 29 has a raceway surface on its outer peripheral surface. The outer race 31 includes a raceway surface on its inner peripheral surface. The balls 37 are rotatably interposed between the raceway surfaces of the inner and outer races. A lubricant is enclosed in a space 41 formed between the raceways of the outer and inner races by an amount of 0.3% to 3% of the capacity of the space.

公开(公告)号：US20010028753A1

公开(公告)日：2001-10-11

申请号：US09842713

申请日：2001-04-27

Applicant: NSK Ltd.

Inventor： Toru Takamizawa ,  Daijiro Kitahara ,  Seizo Miyazaki

IPC: F16C033/60

CPC classification number: G11B19/2009 ,  F16C19/08 ,  F16C25/06 ,  F16C25/08 ,  F16C43/04 ,  F16C2229/00 ,  F16C2370/12 ,  Y10T29/49636 ,  Y10T29/497 ,  Y10T29/49863

Abstract: An assembly method of a preload-adjustable rolling bearing unit comprising the steps of providing a shaft having a first inner raceway, an inner ring being press fitted onto the shaft and having a second inner raceway, such that a pitch of both raceways is set greater than a pitch required to give a predetermined preload, providing an outer ring having outer raceways, providing a plurality of balls to be fitted between the outer raceways of the outer ring, and the first and second inner raceways, positioning the balls equidistant apart in the circumferential direction, and vibrating the rolling bearing unit by means of piezo electric elements while moving the inner ring in the axial direction, measuring the resonant frequency of the rolling bearing unit with a vibration sensor to control the preload whereby the inner ring is pressed onto a shaft while vibrating with only a small amount of energy without scratching the raceway and rolling surfaces.

Abstract translation: 一种预负荷可调滚动轴承单元的组装方法，包括以下步骤：提供具有第一内滚道的轴，内圈压配合到轴上并具有第二内滚道，使得两个滚道的间距设定得更大 提供具有外滚道所需的间距，提供要装配在外圈的外滚道之间的多个球，以及第一和第二内滚道，将球定位在等离子体中 在轴向移动内圈的同时通过压电元件振动滚动轴承单元，用振动传感器测量滚动轴承单元的共振频率，以控制预载荷，由此将内圈压到 同时只用少量能量振动而不会磨损滚道和滚动面。

公开(公告)号：US20040213493A1

公开(公告)日：2004-10-28

申请号：US10757579

申请日：2004-01-15

Applicant: NSK LTD.

Inventor： Toru Takamizawa ,  Daijiro Kitahara ,  Seizo Miyazaki

IPC: F16C019/00

CPC classification number: F16C19/08 ,  F16C25/06 ,  F16C25/08 ,  F16C33/60 ,  F16C43/04 ,  F16C2229/00 ,  F16C2370/12 ,  G11B19/2009

Abstract: An assembly method of a preload-adjustable rolling bearing unit comprising the steps of providing a shaft having a first inner raceway, an inner ring being press fitted onto the shaft and having a second inner raceway, such that a pitch of both raceways is set greater than a pitch required to give a predetermined preload, providing an outer ring having outer raceways, providing a plurality of balls to be fitted between the outer raceways of the outer ring, and the first and second inner raceways, positioning the balls equidistant apart in the circumferential direction, and vibrating the rolling bearing unit by means of piezo electric elements while moving the inner ring in the axial direction, measuring the resonant frequency of the rolling bearing unit with a vibration sensor to control the preload whereby the inner ring is pressed onto a shaft while vibrating with only a small amount of energy without scratching the raceway and rolling surfaces.

Abstract translation: 一种预负荷可调滚动轴承单元的组装方法，包括以下步骤：提供具有第一内滚道的轴，内圈压配合到轴上并具有第二内滚道，使得两个滚道的间距设定得更大 提供具有外滚道所需的间距，提供要装配在外圈的外滚道之间的多个球，以及第一和第二内滚道，将球定位在等离子体中 在轴向移动内圈的同时通过压电元件振动滚动轴承单元，用振动传感器测量滚动轴承单元的共振频率，以控制预载荷，由此将内圈压到 同时只用少量能量振动而不会磨损滚道和滚动面。

公开(公告)号：US20020118901A1

公开(公告)日：2002-08-29

申请号：US10080152

申请日：2002-02-22

Applicant: NSK LTD.

Inventor： Toru Takamizawa ,  Daijiro Kitahara ,  Seizo Miyazaki

IPC: F16C033/60

CPC classification number: F16C19/08 ,  F16C25/06 ,  F16C25/08 ,  F16C33/60 ,  F16C43/04 ,  F16C2229/00 ,  F16C2370/12 ,  G11B19/2009

Abstract: An assembly method of a preload-adjustable rolling bearing unit comprising the steps of providing a shaft having a first inner raceway, an inner ring being press fitted onto the shaft and having a second inner raceway, such that a pitch of both raceways is set greater than a pitch required to give a predetermined preload, providing an outer ring having outer raceways, providing a plurality of balls to be fitted between the outer raceways of the outer ring, and the first and second inner raceways, positioning the balls equidistant apart in the circumferential direction, and vibrating the rolling bearing unit by means of piezo electric elements while moving the inner ring in the axial direction, measuring the resonant frequency of the rolling bearing unit with a vibration sensor to control the preload whereby the inner ring is pressed onto a shaft while vibrating with only a small amount of energy without scratching the raceway and rolling surfaces.

Abstract translation: 一种预负荷可调滚动轴承单元的组装方法，包括以下步骤：提供具有第一内滚道的轴，内圈压配合到轴上并具有第二内滚道，使得两个滚道的间距设定得更大 提供具有外滚道所需的间距，提供要装配在外圈的外滚道之间的多个球，以及第一和第二内滚道，将球定位在等离子体中 在轴向移动内圈的同时通过压电元件振动滚动轴承单元，用振动传感器测量滚动轴承单元的共振频率，以控制预载荷，由此将内圈压到 同时只用少量能量振动而不会磨损滚道和滚动面。

公开(公告)号：US20040161183A1

公开(公告)日：2004-08-19

申请号：US10780611

申请日：2004-02-19

Applicant: NSK Ltd.

Inventor： Seizo Miyazaki ,  Hideo Ouchi ,  Toru Takamizawa

IPC: F16C033/60

CPC classification number: F16C19/56 ,  F16C19/06 ,  F16C19/183 ,  F16C19/543 ,  F16C25/06 ,  F16C35/061 ,  F16C2226/40 ,  F16C2360/46 ,  F16C2370/12

Abstract: A bearing device comprising a shaft, a housing, a double row of bearings provided between the shaft and the housing and preloaded by a fixed-position preloading method, the double row of bearings having a pair of races with a gap therebetween for preload adjustment, and the bearing device further having a support member for supporting one side of the races in the pre-loading direction, and the support member provided on the side of one of the shaft and the housing.

Abstract translation: 一种轴承装置，包括轴，壳体，设置在轴和壳体之间并由固定位置预加载方法预加载的双列轴承，双列轴承具有一对间隙，用于预加载调节， 并且所述轴承装置还具有用于在所述预加载方向上支撑所述座圈的一侧的支撑构件，以及设置在所述轴和所述壳体中的一个的一侧的所述支撑构件。