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Abstract
Circumference radial preload due to the interference fit is of a great significant influence on rolling frictional power loss of bearing and service life of machinery. In this article, an analytical method where circumference radial preload is first involved is presented for determining the value of rolling friction power loss of ball bearing (SKF-6205). The experiments under different operating conditions for the bearing were carried out which verify the validity of our proposal. The work described in this article can be regarded as a foundation for the accuracy thermal modeling and friction power loss analysis of the deep-groove ball bearings in machinery.
Highlights
Deep-groove ball bearing was widely used to support rotational shafts in machine due to the low friction properties associated with it.[1]
Whereas the circumference radial preload (CRP) generated due to the interference fit has a significant influence on the bearing frictional power loss and service life of machine
A three-dimensional finite element method was proposed to simulate the friction properties for large-sized deep-groove ball bearings whose surfaces were coated with thin lubricant film using Hertz contact theory.[5]
Summary
Deep-groove ball bearing was widely used to support rotational shafts in machine due to the low friction properties associated with it.[1]. A great deal of research work has been done on the rolling element bearing preload almost in the axial and radial directions or combination of them.[2,3,4] According to Hertz elliptical contact theory, the CRP has a direct effect on the bearing’s deformation and contact force between the balls and bearing raceways. A three-dimensional finite element method was proposed to simulate the friction properties for large-sized deep-groove ball bearings whose surfaces were coated with thin lubricant film using Hertz contact theory.[5] With respect to the motion analysis of the ball’s rolling and sliding during the ball’s orbit motion in the raceways, some attempts, such as by Alexandre and Daniel[6] and Hamrock,[7] have been made. Kang et al.[8] presented modified load–deflection factors iterated using the Newton iterative algorithm to make the deviations of the results of Jones–Harris method be significantly reduced or eliminated for the deep-groove ball bearings
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