Torque Motor

The torque motor provides a torque that is virtually constant or similar to the starting torque within 60% of the synchronous and counter-rotational speed.

Usage Cases

Torque motors are used in applications where constant and unlimited torque is required. A classic case is the drive of cable winding drums. These devices must be able to wind or unwind the cable, maintaining a tension on it that is as constant as possible. Another very frequent use is the control of roller conveyors with the possibility of counter-rotation or frequent operation at 0 rpm. In summary, it can be said that the torque motor is applicable wherever it is necessary to have a force in a constant potential state over time.

Electrical and Mechanical Characteristics

Polarity

The C and CF series torque motors are made with 6/8/12 poles.

Insulation

Given the particular construction and the thermal stresses to which the motors are subjected, the insulation is of class “F or H” with high-quality materials.

Winding Protection

Upon request, the winding is protected by thermal protectors embedded in the windings and calibrated according to the insulation class.

Ventilation

The motors of the N/C series are self-ventilated, while those of the N/Va series are servo-ventilated. The high-efficiency helical fans up to size N 112 are single-phase V230 Hz 50/60, while the N132 sizes are cooled by high-efficiency centrifugal fans, with single-phase V230 Hz 50/60 or three-phase V230/400 Hz 50 power supply. In the case of single-phase power supply, the fans are thermally protected, while for three-phase, protection is provided at the customer’s request.

Voltage and Frequency

The standard motors are designed for V400 Hz 50 voltage, however, they can be made with special voltages upon customer request.

Version with Electromagnetic Brake CF

The torque motors identified by the code CF are equipped with a spring-loaded electromagnetic safety brake with braking action in the event of voltage failure.