Abstract
In this paper, an equation for the calculation of the frictional torque of a dry-lubricated tapered roller bearing (TRB) is provided in which the effect of the roller skewing is emphasized. Calculations were performed to investigate the effect of the roller skewing on the torque of dry-lubricated TRB for two representative preload methods, that is, axial force preload and axial displacement preload. The results show that a proper roller skewing angle under axial force preload benefits the reduction of the TRB torque. However, the roller skewing angle should not exceed a certain critical value; otherwise, it will cause a steep rise in the TRB torque. Finally, the critical value of the roller skewing angle as a function of the friction coefficient and cage pocket clearance is presented. The developed torque model provides a tool for the internal design and torque optimization of dry-lubricated TRBs.
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References
Obara S, Suzuki M. Long-term operation of Si3N4 ball bearings at temperatures up to 650 °C in ultra-high vacuum. Tribol Trans40(1): 31–40 (1997)
Nishimura M, Suzuki M. Solid-lubricated ball bearings for use in a vacuum-state-of-the-art. Tribol Int32(11): 637–647 (1999)
Eiden M, Seiler R. Space mechanisms and tribology challenges of future space missions. Acta Astronaut55(11): 935–943 (2004)
Lostado R, García R E, Martinez R F. Optimization of operating conditions for a double-row tapered roller bearing. Int J Mech Mater Des12(3): 353–373 (2016)
Lostado R, Martinez R F, Mac Donald B J. Determination of the contact stresses in double-row tapered roller bearings using the finite element method, experimental analysis and analytical models. J Mech Sci Technol29(11): 4645–4656 (2015)
Miyoshi K. Considerations in vacuum tribology (adhesion, friction, wear, and solid lubrication in vacuum). Tribol Int32(11): 605–616 (1999)
Ohta H, Kanatsu M. Running torque of ball bearings with polymer lubricant (effect of the enclosure form of polymer lubricant). Tribol Trans48(4): 484–491 (2005)
Marquart M, Wahl M, Emrich S, Zhang G, Sauer B, Kopnarski M, Wetzel B. Enhancing the lifetime of MoS2-lubricated ball bearings. Wear303(1–2): 169–177 (2013)
Gonçalves D, Pinho S, Graça B, Campos A V, Seabra J H O. Friction torque in thrust ball bearings lubricated with polymer greases of different thickener content. Tribol Int96: 87–96 (2016)
Yang Y, Danyluk S, Hoeprich M. Rolling element skew in tapered roller bearing. Tribol Trans43(3): 564–568 (2000)
Yang Y Y, Danyluk S, Hoeprich M. On the measurement of skew of tapered roller bearings. Tribol Lett6(3–4): 221 (1999)
Nelias D, Bercea I, Paleu V. Prediction of roller skewing in tapered roller bearings. Tribol Trans51(2): 128–139 (2008)
Gupta P K. On the dynamics of a tapered roller bearing. J Tribol111(2): 278–287 (1989)
Witte D C. Operating torque of tapered roller bearings. Tribol Trans16(1): 61–67 (1973)
Aihara S. A new running torque formula for tapered roller bearings under axial load. J Tribol109(3): 471–477 (1987)
Zhou R S, Hoeprich M R. Torque of tapered roller bearings. J Tribol113(3): 590–597 (1991)
Creju S, Bercea I, Mitu N. A dynamic analysis of tapered roller bearing under fully flooded conditions Part 1: Theoretical formulation. Wear188(1–2): 1–10 (1995)
Tong V C, Hong S W. The effect of angular misalignment on the running torques of tapered roller bearings. Tribol Int95: 76–85 (2016)
Palmgren A. Ball and Roller Bearing Engineering. 3rd ed. Philadelphia (USA): SKF Industries Inc., 1959.
Harris T A, Kotzalas M N, Yu W K. On the causes and effects of roller skewing in cylindrical roller bearings. Tribol Trans41(4): 572–578 (1998)
Harris T A. Rolling Bearing Analysis. New York (USA): John Wiley & Sons, 2001: 275.
Karna C L. Performance characteristics at the rib roller end contact in tapered roller bearings. Tribol Trans17(1): 14–21 (1974)
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The authors are grateful for the support of the National Natural Science Foundation of China (Nos. 51675120 and U1637206).
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Chi ZHANG. He received his M.S degree in mechanical engineering in 2013 from Harbin Institute of Technology, Harbin, China. After then, he was a Ph.D student in the MIIT (Ministry of Industry and Information Technology) Key Laboratory of Aerospace Bearing Technology and Equipment at the same university. His research interests include coating tribology and tribology design in mechanical system.
Le GU. He received his M.S and Ph.D degrees in mechanical engineering from Harbin Institute of Technology, Harbin, China. in 1998 and 2003, respectively. He joined the MIIT Key Laboratory of Aerospace Bearing Technology and Equipment at Harbin Institute of Technology from 1998. His current position is a professor. His research areas cover the tribology of aerospace bearing, lubrication design and life prediction for fundamental mechanical elements.
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Zhang, C., Gu, L., Mao, Y. et al. Modeling the frictional torque of a dry-lubricated tapered roller bearing considering the roller skewing. Friction 7, 551–563 (2019). https://doi.org/10.1007/s40544-018-0232-8
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DOI: https://doi.org/10.1007/s40544-018-0232-8