Deflection Characteristics of a Statically Loaded Multiple-Bearing Differential Pinion Shaft 720389
Theoretical and experimental determinations of load and deflection at the spigot bearing position were performed on a straddle-mounted (3-bearing) differential pinion shaft in a complete truck differential and carrier assembly. Two theoretical calculation methods are used; namely, a widely used approximate method that considers the shaft to be supported by two bearings and a digital computer method that treats the shaft as a statically indeterminate structure. Loads on the spigot bearing were measured using the Contact Pattern Analysis technique, while deflections were measured with strain gage displacement transducers, all under a statically applied input torque. Comparison of theoretical and experimental results show that the actual loads are more consistent with a 3-bearing statically indeterminate system calculation than with a simplified 2-bearing theoretical approach. Further refinement of the elastic model of the bearings is suggested to provide even closer agreement.
Citation: Delao, M., Pfaffenberger, E., and Derner, W., "Deflection Characteristics of a Statically Loaded Multiple-Bearing Differential Pinion Shaft," SAE Technical Paper 720389, 1972, https://doi.org/10.4271/720389. Download Citation
M. M. Delao, E. E. Pfaffenberger, W. J. Derner
Link-Belt Bearing Div., FMC Corp.
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