How much torque is required to operate a barley crusher?
The rotational speed, was 240rpm, or 4 rps. This gives a torque of. T = 190 / 2 x 3.141 x 4 = 190 / 25.128 = 7.5 Nm. That's about 66 lb.in. However, unless you can get a motor with a rpm that matches the sweet spot for milling grain, 120-260 rpm, then you'll have to use gears, sheaves, PWM, variac or some other speed controller to regulate the ...