Estimation of wear life of wheel loader tyre

The purpose of this paper is to analyse the several factors affecting the critical wear life of off-road tyres of wheel loaders, and to estimate the wear life of the tyre. Here, the variation of tread wear depth with service meter hour was measured for two kinds of OR tyre, 37.25-35-30/36PR and 45/65-45-50PR which were used for bucket capacity 7.7 and 9.1–12.0 m 3 of wheel loader, respectively. As a result, the critical wear life could be expressed by the initial tread depth, the tyre diameter, the real contact pressure, the roughness of terrain surface, the loading cycle and the amount of slippage. To elongate the wear life, the terrain surface should be controlled to be as smooth as possible and the amount of tyre slippage should be decreased by means of increasing the rear axle load.