公开(公告)号：US20040076354A1

公开(公告)日：2004-04-22

申请号：US10272302

申请日：2002-10-17

Applicant: NSK Corporation

Inventor： Shigenori Murata

IPC: F16C033/60 ,  F16C043/06

CPC classification number: F16C33/38 ,  F16C19/18 ,  F16C19/56 ,  F16C43/04 ,  F16C2360/44 ,  Y10T29/4968

Abstract: A bearing for use in a water pump or similar apparatus and a method of assembling the bearing. The bearing has a stepped shaft and a counterbored raceway at the fan or pulley end which allows for use of a larger number of balls in the raceway at the fan or pulley end, and which allows for using larger balls at the impeller end. The method of assembly of the bearing includes assembling balls and a cage to form a ball and cage assembly, assembling ball and cage assembly into the outer race at its pulley end, then sliding the shaft, impeller end first, into the outer race through the pulley end such that the first inner raceway and the first balls align with the first outer raceway. The shaft is then displaced in a direction perpendicular to its axial centerline within the outer race. A second plurality of balls is inserted onto the shaft within the outer race at its second outer raceway end, and a second cage is inserted over the shaft and within the outer race to surround the second plurality of balls.

Abstract translation: 用于水泵或类似装置的轴承以及组装轴承的方法。 轴承在风扇或滑轮端具有台阶轴和沉头滚道，允许在风扇或滑轮端的滚道中使用更多数量的滚珠，并允许在叶轮端使用较大的滚珠。 轴承的组装方法包括组装球和保持架以形成球和保持架组件，在其滑轮端部将球和保持架组件组装到外圈中，然后将轴，叶轮端部首先滑入外圈，通过 滑轮端部，使得第一内滚道和第一滚珠与第一外滚道对准。 然后轴在垂直于其在外圈内的轴向中心线的方向上移位。 第二多个球在其第二外滚道端处在外座圈内插入到轴上，并且第二保持架插入轴上并在外座圈内以包围第二多个球。