Single stage cylindrical gear reducer, the total efficiency of the drum by the efficiency of it, why?
The drum is also supported by the shaft, which consumes part of the power, and the final speed required by the working machine is the speed of the roller movement
The direct point is that the roll drives the working machine to work, which is the last stage of the transmission chain
Need to be calculated, because the roller in the entire transmission chain, if you do not calculate the efficiency of the drum, it is estimated that you finally calculated the required transmission power will be less than the actual required transmission power.