high torque asynchronous engine
Torque is a moment, and the moment is defined in physics:
Moment = force * arm of arm
The lever here can be regarded as the radius of the rotation of the motor. If the motor torque is too small, you can not take the object to be brought, that is, the feeling of the motor "strength" is not large enough.
Generally speaking, the motive force that the motor drives the machinery is the torque of the motor,
The torque of the motor = the belt pulley, the force that drives the belt, the radius of the X pulley