Contact Force Distribution and Static Load-carrying Capacity of Large Size Double Row Four-point Contact Ball Bearing

Abstract Clearance not only affects the startup torque, rotation precision and stiffness of bearing, but also affects the load distribution, load-carrying capacity and life of bearing. A computational model in which the clearance of bearing is first included is presented for determining the contact force distribution and static load-carrying capacity of a double row four-point contact ball bearing which is subjected to the combined radial, axial and overturning moment loadings. The relation between the negative axial clearance and the contact force distribution is analyzed. The static load-carrying capacity curves are established, and the effects of the changes in negative axial clearance, curvature radius coefficient of raceway groove and initial contact angle on the static load-carrying capacity are analyzed. The results show that, with the increase in the absolute value of negative clearance, the maximum contact load decreases first and then increases. The clearance values in the range of −0.2 mm–0 mm have little effect on the static load-carrying capacity of bearing. With the increase in the curvature radius coefficient of raceway groove and the decrease in the initial contact angle, the static load capacity of bearing decreases.

[1]  Mao Yue-xin.  Calculation on Fatigue Life of Yaw and Blade Bearings , 2011 .

[2]  Josu Aguirrebeitia,et al.  General static load-carrying capacity for the design and selection of four contact point slewing bearings: Finite element calculations and theoretical model validation , 2012 .

[3]  T. A. Harris,et al.  Rolling Bearing Analysis , 1967 .

[4]  Xu Ming-heng.  Mechanical analysis on pitch bearing of wind turbines , 2011 .

[5]  L. Kania,et al.  Modelling of rollers in calculation of slewing bearing with the use of finite elements , 2006 .

[6]  Jorge Damian,et al.  Load distribution in a four contact-point slewing bearing , 2003 .

[7]  Alain Daidié,et al.  Screw behavior in large diameter slewing bearing assemblies: numerical and experimental analyses , 2007 .

[8]  Su Jian.  Establishment of Static Load Curve of Turntable Bearings , 2004 .

[9]  Josu Aguirrebeitia,et al.  General static load capacity in four contact point slewing bearings , 2010 .

[10]  Daniel Nelias,et al.  Ball Motion and Sliding Friction in a Four-Contact-Point Ball Bearing , 2007 .

[11]  Srečko Glodež,et al.  Computational model for calculation of static capacity and lifetime of large slewing bearing's raceway , 2012 .

[12]  S. Zupan,et al.  Carrying angle and carrying capacity of a large single row ball bearing as a function of geometry parameters of the rolling contact and the supporting structure stiffness , 2001 .

[13]  Yanshuang Wang.  Influence of Negative Clearance on Load Distributions of Large-size Double Row Four-point-contact Ball Bearings , 2012 .