Analysis of Variations in Backlash Between Ring Gear and Planets in a Hub Reduction Axle

This paper presents a simple diagnostic tool / method to identify the causes of variations in measured backlash between the ring gear and its planets in a hub reduction axle. This tool can identify the influence of the parameters such as ring gear ovality / eccentricity with respect to hub axis, accuracy of planet pinion bore position on bell-housing-carrier with respect to hub axis and hub play. This tool eliminates the need of complex and time consuming measurement methods to identify these individual parameters.