Abstract
To establish the reliability assessment technology of spherical roller bearing, we performed the major failure analysis, and then produced the reliability parameters for spherical roller bearing. As a first step, we made out the failure analysis data of roller bearing. And then, we decided the reliability parameters of spherical roller bearing by using of MINITAB software. Then we verified propriety the reliability parameters by comparison of pre-performed test results and MINITAB analysis. In this paper, we proposed a method of the reliability assessment technology of spherical bearing, and showed the reliability parameters of roller bearing by use of 8-samples spherical roller bearing. And also, we presented the useful reliability parameters for roller bearing test, which are produced by MINITAB analysis and marking of Weibull probability paper using the measured some life points, and also verified the propriety of reliability parameters by some kinds of complex tests.
Highlights
Bearings are a main components part of rotation equipments
The barrel type roller configured in two rows has a function of adjusting the rotation center of axis in the outer ring raceway surface
The main failure modes of a spherical roller bearing are deformation, fracture and crack caused by the repeated load on the raceway surface of the inner and outer ring, and spalling due to crack propagation of surface
Summary
Bearings are a main components part of rotation equipments. Roller and the raceway surface of the inner and outer ring of the spherical bearing is spherical shape. The barrel type roller configured in two rows has a function of adjusting the rotation center of axis in the outer ring raceway surface. Failure analysis, test method and life distribution for the reliability assessment of the spherical bearing have been proposed. The main failure mode of the bearing was confirmed and through the QFD, the test items for the reliability assessment were determined. No-failure life test time was calculated through the field operation time, confidence level and some parameters. This study developed test equipment which adapted the field condition for the life test of spherical roller bearing and life test was performed. The life distribution analysis was based on the reliability test results for the eight samples, it could be predict the life trend of the bearing through the calculating the related parameters
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