Torque motors as external rotor motors from Fischer
Whether with an internal rotor or an external rotor, torque motors are extremely powerful direct drives that develop enormous torque in a small design.
Torque motors are referred to as frameless motors because they are not enclosed by a housing in the classic sense. Unlike conventional drives, the torque alone, i.e. not the power, determines the size of the motor. Basically, torque motors of any size are considered true powerhouses.