An Empirical Investigation of the Impact of an Axially Oscillating Shaft on Friction and Lubrication in Cylindrical Roller Bearings

Journal article
(Original article)


Publication Details

Author(s): Meinel A, Tremmel S
Journal: Bearing World Journal
Publication year: 2019
Journal issue: 3
Pages range: 41 - 55
ISSN: 2513-1753
Language: English


Abstract

Rolling element bearings experience dynamic
axial thrust and oscillating shaft movements of various frequencies and
amplitudes in a multitude of applications, especially in heavy-duty machinery.
These operating conditions can cause significant friction losses which entails
higher operating temperatures and lower lubricant operating viscosities.
Dynamic axial shaft movements increase shearing between rollers and raceways excessively
which impairs the mechanical stability of the lubricant. In consequence, this
results in accelerated lubricant degradation and may cause insufficient
lubrication or even premature bearing failure. In order to choose a suitable
lubricant for such a bearing application that experiences axial shaft movements
or to be able to adequately schedule lubricant maintenance intervals, the
occurring shear- or friction forces between rollers and raceways due to the
axial oscillations are of particular interest. Therefore, in an experimental
study, an oil-lubricated cylindrical roller bearing NU210 has been subjected to
dynamic axial shaft movements of various frequencies and amplitudes. Two
specifically designed bearing test rigs are introduced within the scope of this
paper and the experimental procedure is presented. The results obtained which
include measurements of axial friction forces between rollers and raceways,
steady-state operating temperatures, bearing friction losses as well as cage
slippage are discussed in detail and an axial friction coefficient is derived
from the results. Concluding, a short assessment is given, to what extend axial
shaft movements might exhibit a critical impact on lubricant performance,
friction and wear.


FAU Authors / FAU Editors

Meinel, Andreas
Lehrstuhl für Konstruktionstechnik
Tremmel, Stephan Dr.-Ing.
Lehrstuhl für Konstruktionstechnik


How to cite

APA:
Meinel, A., & Tremmel, S. (2019). An Empirical Investigation of the Impact of an Axially Oscillating Shaft on Friction and Lubrication in Cylindrical Roller Bearings. Bearing World Journal, 3, 41 - 55.

MLA:
Meinel, Andreas, and Stephan Tremmel. "An Empirical Investigation of the Impact of an Axially Oscillating Shaft on Friction and Lubrication in Cylindrical Roller Bearings." Bearing World Journal 3 (2019): 41 - 55.

BibTeX: 

Last updated on 2018-20-12 at 11:00