TSMC 'S Constant Torque Springs are constructed from a pre-stressed flat strip material that the form of a tightly wound spiral and is placed on two drums. A constant torque load is developed when the outer end of the spring is attached to another drum as the spring is reverse flexed from the output drum and will returns to its natural curvature on the storage drum.
As its name implies, these Constant torque spring exerts a nearly constant restraining force to resist uncoiling, while offering a large torque in relatively small space requirements. With these characteristics, the constant torque are ideal for a particular area of application with the use of cable, pulley requiring smooth returning, retrieving and counterbalancing, most commonly used for wind-up motors, feeders and conveyors, counterbalance which are utilized in the Aerospace, Medical Devices, Window, Automotive industries...etc.
FEATURES
Type A Characteristics:
1. Constant output torque (zero gradient).
2. Low output torque.
3. No intercoil friction (smooth operation, low hysteresis losses).
4. Low life.
(a) Maximum torque obtained at a life of 2,500 cycles.
(b) Life increases as output drum increases.
5. Large number of output turns.
6. Spring can operate as clutch on output drum.
