A Study on Strength of Toothed Belt : 5th Report, Effect of Pitch Difference on Fatigue Strength of Toothed Belt

The pitch difference between toothed belt and pulley exerts great influence on the fatigue strength of toothed belt. We reseached experimentally the relationship between pitch difference and fatigue strength for L-belt section of polychloroprene rubber and polyurethane toothed belts. From this study, the following results have been obtained. There are several features of fracture which relate to pitch difference and belt tension. A high fatigue strength can be expected if the pitch difference is selected to equalize the load distribution.