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Torque motors are designed to provide high starting torque and sloping characteristics (torque is highest at zero speed and decreases steadily with increasing speed), and operate over a wide speed range. They also provide stable operation, especially in the low speed range or under a locked rotor condition. Torque motors are available in frame sizes from 2.36 in. (60 mm) up to 3.54 in. (90 mm) and support single-phase 110/115 VAC and single-pahse 220/230 VAC power supplies.
The motor torque is approximately proportional to the square of the voltage, allowing easy speed control simply by changing the voltage of the power supply.
In an application where and object is released continuously at a constant speed and wound up with constant tension, the torque must be doubled and the speed must be halved if the diameter of the winding spool is doubled.

Unlike induction motors or reversible motors, torque motors are designed to provide stable torque even unders stall conditions or at very low speeds (nearly stalling). They are suitable for pushing applications that require static torque, or for loads that are usually under a locked rotor condition but are under stall conditions at the end of processes. The motors can operate continuously at 60 VAC or less. When used at voltage above 60 VAC, the motors are rated for limited duty. The motor has a 5-minute rating at 115 VAC.
NOTE: When using a motor in a locked rotor condition, the output torque becomes very large. Do not exceed the permissible torque of the gearhead. Also, ensure that the work does not hit an object and stop, since this can cause damage to the gearhead due to shock.

By using the motor in the braking region of the speed-torque characteristics, it can serve as a brake. Constant tension operation can be achieved by applying a DC voltage.
The compact design simplifies handling and enables the drive unit of the machine to be mounted in a small area.

The World K Series features models that conform to the RoHS Directive that prohibits the use of six chemical substances including lead and cadmium.
RoHS (Restriction of Hazardous Substances) Directive:
Directive on restriction of the use of certain hazardous substances in electrical and electronic equipment (2002/95/EC).
The RoHS Directive prohibits the use of six chemical substances in electrical and electronic products sold in the EU member states. The six controlled substances are: lead, hexavalent chromium, cadmium, mercury and two specific brominated flame-retardants (PBB and PBDE).