Analysis of cage slip in angular contact ball bearing considering non-Newtonian behavior of elastohydrodynamic lubrication

Abstract

A dynamic model of angular contact ball bearing considering non-Newtonian behavior and interaction between balls and cage is deduced to predict cage slip. And then the cage slip are investigated and compared with measured results under different rotational speeds and axial loads to verify the proposed dynamic model of bearing. It is concluded that the results based on the non-Newtonian behavior of elastohydrodynamic lubrication is more agreement in trend with the tests than that based on the Newtonian assumption, and so the non-Newtonian behavior of elastohydrodynamic lubrication are needed in the cage slip analysis.

Study on Cage Stability of Solid-Lubricated Angular Contact Ball Bearings in an Ultra-Low Temperature Environment

“…where µ is the traction coefficient; A, B, C, and D are the constant coefficients that have no physical significance; and ∆U is sliding speed. Prior to this, other scholars conducted relevant research [28], and, on this basis, I selected different working conditions to study the traction coefficient of solid-lubricated bearings in a nitrogen environment. The ball-disc testing machine was employed to determine the traction coefficient (µ) of MoS 2 solid lubricant under various working conditions.…”

“…A complete bearing coated with MoS2 is in Figure 4, where the MoS2 film has a jet-black color, no matte and a soft textur When the spraying process is completed, the outer ring is heated to assemble the b parts. Prior to this, other scholars conducted relevant research [28], and, on th lected different working conditions to study the traction coefficient of sol bearings in a nitrogen environment. The ball-disc testing machine was em termine the traction coefficient ( μ ) of MoS2 solid lubricant under various ditions.…”

“…Ryu, et al [27] analyzed the stability of the cage by the Fourier transform of the coefficient of friction and sound vibration. Wen, et al [28] developed a calculation model to analyze the dynamics of bearings, taking into account non-Newtonian fluids. Another study by Ma [29] revealed that the collision probability between the balls and the cage increased in the bearing area, resulting in greater instability of the cage.…”