Contact Stress Analysis on a Large-Sized Four Contact-Point Slewing Bearing with Negative Axial Play

Abstract:

The analysis method on contact stresses between balls and inner/outer ring raceways of a large-sized four contact-point slewing bearing with negative axial play was present. The contact stresses and contact areas between balls and inner/outer ring raceways of a slewing bearing were computed at different negative axial plays without applied load. The results show that a ball contacts with inner/outer ring raceways at four points whose contact areas and contact stress distribution are approximately same. The contact stresses between balls and inner ring raceway are slightly higher than those at outer ring raceway. Contact stress and contact area increase with absolute value of negative axial play increasing. Startup friction torque can be improved by increasing the absolute value of negative axial play.

• Periodical: Applied Mechanics and Materials (Volume 307)
• Pages: 223-226
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.307.223
• Online since: February 2013
• Authors: Yan Shuang Wang, Hai Feng Zhu
• Keywords: Bearing, Contact Stress, Four Point Contact, Negative Play

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