Abstract
In this study, using two kinds of bearings (tapered roller and angular contact bearings) with a straight bevel gear testing machine of power-circulating type, the fillet strains of gear tooth and the displacements of a straight bevel gear in three directions are measured under a constant transmitted torque. From these results, the influences of the tapered roller or angular contact bearings on the dynamic behaviors of bevel gears are investigated. The conclusions are described as follows. The tapered roller bearings produce a greater, effect of dynamic load on each position than the angular contact bearings. As for the meshing frequency components of higher zones, such as 3 fz and 4 fz, the displacements of the tapered roller bearing in the three directions are greater than those of the angular contact bearings. These results correspond to the tendency of the fillet stress ratio.
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