Friction torque in four contact point slewing bearings: Effect of manufacturing errors and ring stiffness

Abstract This work outlines a procedure for the determination of the interferences between balls and raceways in four contact point slewing bearings due to manufacturing errors. The procedure is applied to a particular case and finite element analyses are performed for the friction torque calculation, considering different preloads. The results are used to evaluate the influence of manufacturing errors and the stiffness of the rings in the idling friction torque of the bearing.

[1]  Seong Ho Kang,et al.  An Analytical Comparison Between Ball and Crossed Roller Bearings for Utilization in Actuator Modules for Precision Modular Robots , 2003, DAC 2003.

[2]  A. B. Jones.  Ball Motion and Sliding Friction in Ball Bearings , 1959 .

[3]  Iker Heras,et al.  Calculation of the Ball Raceway Interferences Due to Manufacturing Errors and Their Influence on the Friction Moment in Four-Contact-Point Slewing Bearings , 2017 .

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

[5]  Josu Aguirrebeitia,et al.  General static load‐carrying capacity of four‐contact‐point slewing bearings for wind turbine generator actuation systems , 2013 .

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

[7]  K. Johnson,et al.  Three-Dimensional Elastic Bodies in Rolling Contact , 1990 .

[8]  Iker Heras,et al.  FEM Model for Friction Moment Calculations in Ball-Raceway Contacts for Applications in Four Contact Point Slewing Bearings , 2015 .

[9]  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 .

[10]  Alain Daidié,et al.  3D Simplified Finite Elements Analysis of Load and Contact Angle in a Slewing Ball Bearing , 2008 .

[11]  Daniel Nelias,et al.  Running Torque of Slow Speed Two-Point and Four-Point Contact Bearings , 2015 .

[12]  Alexandre Leblanc,et al.  Analysis of Ball Bearings with 2, 3 or 4 Contact Points , 2008 .

[13]  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 .

[14]  Alberto Serna,et al.  Design of Four Contact-Point Slewing Bearing With a New Load Distribution Procedure to Account for Structural Stiffness , 2010 .

[15]  Sriramachandra Aithal,et al.  Effect of manufacturing errors on load distribution in large diameter slewing bearings of fast breeder reactor rotatable plugs , 2016 .

[16]  Josu Aguirrebeitia,et al.  Effect of the preload in the general static load‐carrying capacity of four‐contact‐point slewing bearings for wind turbine generators: theoretical model and finite element calculations , 2014 .