A test and heat friction based method for evaluation of the technical condition and residual service life of machinery is presented. It is applicable for mechanisms in which friction of the moving parts leads to wear and to increased heat release. The diagnostic parameter adopted is the peak point of the temperature change rate, observed on the machine casing during the starting stage. The method was tested on the SAWA power reduction gears of KOCKS heavy portal transtainer cranes.Figure 1. Typical view of wear-time dependence: 1, zone of significant running-in wear; 2, zone with normal fixed wear rate; 3, zone of catastrophic wear 0 0 α Residual service life test 281 Figure 3. Typical temperature rates (solid curve) and accelerations (dashed curve) at unstabilized heating stage on the casing of the reduction gear 286 G. Fridler et al.
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