公开(公告)号：US20040240764A1

公开(公告)日：2004-12-02

申请号：US10854262

申请日：2004-05-27

Applicant: NSK LTD.

Inventor： Yoshiro Ide ,  Masatake Ichimaru ,  Yukio Ooura ,  Yuko Kamamura

IPC: F16C043/04 ,  F16C033/58

CPC classification number: F16C19/26 ,  F16C19/225 ,  F16C33/34 ,  F16C33/585 ,  F16C2240/34 ,  F16C2240/40 ,  F16C2240/50

Abstract: A roller bearing includes an inner ring, an outer ring, a plurality of cylindrical rollers each provided between rolling contact surfaces of the inner ring and the outer ring. Each of the cylindrical rollers includes an end face having a peripheral part that is crowned. A flange portion is formed at an outer circumferential face end part of the inner ring and/or an inner circumferential face end part of the outer ring. The peripheral part is crowned in a curving shape represented by an exponential function of ynullanullexp(nullbnullx); where a and b are constants, x is a distance from the rolling contact surface in a radial direction of the cylindrical roller, and y is a crowning fall-off amount from a central part of the end face of the cylindrical roller in an axial direction of the cylindrical roller.

Abstract translation: 滚子轴承包括内环，外圈，多个圆筒滚子，每个圆筒滚子均设置在内圈和外圈的滚动接触表面之间。 每个圆柱滚子包括具有凸起的周边部分的端面。 凸缘部形成在内圈的外周面端部和/或外圈的内周面端部。 周边部分以由y = a.exp（-b.x）的指数函数表示的弯曲形状加冠; 其中a和b是常数，x是从圆筒滚子的径向方向的滚动接触面的距离，y是从圆筒滚子的端面的轴向方向的中心部分的隆起脱落量 的圆柱滚子。

公开(公告)号：US20030219182A1

公开(公告)日：2003-11-27

申请号：US10374058

申请日：2003-02-27

Applicant: NSK Ltd.

Inventor： Hisashi Kawamura ,  Yukio Ooura ,  Mineo Kameko

IPC: F16C033/32 ,  F16C033/62

CPC classification number: F16C19/163 ,  F16C33/32 ,  F16C33/60 ,  F16C33/62 ,  Y10S384/913

Abstract: A bearing with a ball contact with a raceway groove of one of an outer ring and an inner ring at one point and the other at two points. The surface of the ball and the surface of the race of the outer ring and the race of the inner ring were provided with a phosphorus-based modified layer. The ball bearing is at a rotary speed as high as not lower than 70 m/s as calculated in terms of V and a load as small as not greater than 0.05 as calculated in terms of Pr/Cr supposing that the dynamic equivalent radial load is Pr, the basic dynamic rated load is Cr, one of the inner ring and the outer ring is a driving ring and the slip rate of the ball to the one of the inner ring and the outer ring as a driving ring is V.

Abstract translation: 一个轴承与一个外圈和一个内圈的滚道槽在一个点接触，另一个在两点接触。 球的表面和外圈的外圈表面和内圈的外圈设置有磷基改性层。 滚珠轴承的旋转速度高达不低于70m / s，以V计算，并且根据Pr / Cr计算的小于0.05的负载，假定动态等效径向载荷为 Pr，基本动态额定载荷为Cr，内环和外圈之一为驱动环，作为驱动环的内圈和外圈之一的球的滑移率为V.