reducer motor increasing torque

reducer motor are used to increase torque while reducing the speed of a prime mover output shaft (a motor crankshaft, for example). The output shaft of a gearbox rotates at a slower rate than the input shaft, and this reduction in bevel helical gearbox a mechanical advantage, increasing torque. A advantages of variable speed drives can be set up to do the opposite and provide an increase in shaft speed with a reduction of torque.