JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS
Online ISSN : 2189-9967
Print ISSN : 0915-1168
ISSN-L : 0915-1168
Volume 57 , Issue 7
Special Issue on Analysis Techniques Tribologists Should Know
Showing 1-14 articles out of 14 articles from the selected issue
Announcement
Contents
The Valediction by the Ex-President
The Inaugural Address by the President
Serial Messages to Tribologists
Special Issue on Analysis Techniques Tribologists Should Know
Explanation
Essay The Tribo-Soshi, Essays from Tribologists
Original Contribution
  • ―Rolling Fatigue Life under Fluid Lubricating Condition―
    Yuko YASUE, Susumu MATSUMOTO, Yuji YOSHIDA
    2012 Volume 57 Issue 7 Pages 487-495
    Published: July 15, 2012
    Released: February 14, 2020
    JOURNALS FREE ACCESS
    The design of the fatigue life of a rolling bearing is based on the Lundberg-Palmgren theory. This theory suggests that the fatigue life of a rolling bearing is influenced by the size of the volume under shear stress. Thus, a rolling bearing with small balls is expected to display a different fatigue life from one with larger balls, even if their maximum contact pressures are the same. The reason for this difference is that the volumes that are under the shear stress between different-sized bearings are different. However, when the contact equivalent radius of a rolling bearing is 1 mm or less, there is no confirmation whether its fatigue life can be designed according to the Lundberg-Palmgren theory. For this re出on,the fatigue life of ball bearings with small balls is measured under a fluid lubricating condition. The results obtained are as follows. 1) The difference in ball size is not a significant influence on the fatigue life of the ball bearing. 2) The rolling fatigue life of a rolling bearing with small balls, as well as rolling bearings with typical sized balls, can be designed using the conventional method.
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