Precision Magnetic Bearing (2nd Report)

2nd Year Dphil Report

2nd Annual Report on Strees

Precision instrumentation for rolling element bearing characterization.

This article describes an instrument to measure the error motion of rolling element bearings. This challenge is met by simultaneously satisfying four requirements. First, an axial preload must be applied to seat the rolling elements in the bearing races. Second, one of the races must spin under the influence of an applied torque. Third, rotation of the remaining race must be prevented in a way ...

Experimental Measurement of Precision Bearing Dynamic Stiffness

Static stiffness measurement of precision bearing components by influence coefficients is complicated by the task of loading and measuring the baseline test fixture stiffness before including the bearing components. Furthermore, as the displacement of the bearing system is measured for various load conditions, the stiffness of high quality bearings may be difficult to distinguish from the test ...

Testing with a Precision Bearing Analyzer

Introduction With increasing technology, the requirements on the performance of rolling element bearings become more demanding. These types of bearings are used in such applications as computer hard disk drives, which require nanometer level error motion tolerances. In order to measure the error motions of rolling element bearings, the Bearing Analyzer was manufactured with a very precise air b...