MME  Vol.2 No.1 , February 2012
Research on Lubrication Model of Rock Bit Bearings with Non-Newtonian Medium
ABSTRACT
Lubrication media of rock bit journal bearing is non-Newtonian fluid, and because of structure limitations, lubricant supply is only from the inside track and its rheological properties are relatively complex. In general studies, the non- Newtonianism of lubrication media of rock bit journal bearing is neglected to simplify the research process. Based on the universal Reynolds equation of non-Newton media, the mathematical model of lubrication analysis was suitable for the rock bit bearing working conditions was established. Then according to the experimental results of rheological properties of RB-type lubricating grease, the equivalent viscosity of the model was established and this model can be solved by the method used in solving the Reynolds equation of Newton fluid.

Cite this paper
G. Wang, W. Juan and L. Zhong, "Research on Lubrication Model of Rock Bit Bearings with Non-Newtonian Medium," Modern Mechanical Engineering, Vol. 2 No. 1, 2012, pp. 1-5. doi: 10.4236/mme.2012.21001.
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