Friction torque in thrust ball bearings grease lubricated

7th International Conference on Advanced Concepts in Mechanical Engineering

Ianu, G.^1 ; Dumitracu, A.C.^1 ; Cârlescu, V.^1 ; Olaru, D.N.^1

Mechanical Engineering, Mechatronics and Robotics Department, Gheorghe Asachi Technical University of Iai, Romania^1

关键词: Experimental values;    Friction modeling;    Friction torque;    Good correlations;    Rolling friction;    Spin-down;    Theoretical values;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/147/1/012026/pdf
DOI  :  10.1088/1757-899X/147/1/012026

来源: IOP

【 摘 要 】

The authors investigated experimentally and theoretically the friction torque in a modified thrust ball bearing having only 3 balls operating at low axial load and lubricated with NGLI-00 and NGLI-2 greases. The experiments were made by using spin-down methodology and the results were compared with the theoretical values based on Biboulet&Houpert's rolling friction equations. Also, the results were compared with the theoretical values obtained with SKF friction model adapted for 3 balls. A very good correlation between experiments and Biboulet-&-Houpert's predicted results was obtained for the two greases. Also was observed that the theoretical values for the friction torque calculated with SKF model adapted for a thrust ball bearing having only 3 balls are smaller that the experimental values.