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Spiral Springs – Precision Rotary Torque Delivery
About the Product
Spiral springs, often referred to as power springs or clock springs, are tightly wound flat strip springs that operate on rotary motion. They are designed to deliver a specific torque over an angle of rotation, making them ideal for applications that require a uniform rotational force or need to store and release rotational energy. They are characterized by their compact size for the amount of torque they can provide.
- Creates a uniform torque over rotation.
- Ideal for limited angular travel applications.
- Tightly coiled for minimal radial space.
- Can store and release high amounts of energy.
Spiral springs are used in mechanical devices that require a winding and unwinding function, providing rotational force by unwinding from a central arbor (shaft). Common uses include counterbalances, seat belt retractors, cable reels, and older clock mechanisms. They are crucial where high torque and high energy storage density in a confined space are required.
Technical Specifications
Characteristics: Flat strip material, consistent tension, high energy storage density, customized winding direction.
Measurements: Strip Thickness: 0.1 mm – 2.0 mm. Width: 1 mm – 20 mm. Number of Turns: 2 to 20.
Configurations: Open center or closed center, mounted inside a retaining housing, custom ends (hooks or bends).
Key Parameters: Torque at angle, number of turns, material type, diameter of the housing.
Rate or Stiffness: High torque stiffness: 0.05 N.m/degree – 5.0 N.m/degree.
Unit of Measure: N.m/degree, mm.
Service Life: Up to 100,000 cycles, depending on rotation and stress.
Tolerances: +/- 10% on torque at working angle.
Applications: Motors, seat belt retractors, cable reels, door closing mechanisms, clocks.
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