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CUSTOM TORSION SPRINGS SPECIFICATION FORM - Lee Spring

CUSTOM TORSION SPRINGS SPECIFICATION FORM - Lee Spring 2025

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The document provides a specification form for custom torsion springs, detailing their function, design options, materials, and manufacturing capabilities. Torsion springs are described as helical springs that exert torque and can be designed for various applications with specific configurations and finishes. The document includes tables for wind direction and end styles, as well as sections for customer specifications such as wire diameter, torque, and operating temperature.

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What are the properties of a torsion spring?

These springs can be made from materials such as wire, sprung steel, or rubber. Torsion springs experience greater bending stress than rotational stress as they are twisted to achieve a tighter winding. Unlike other types of springs, torsion springs solely involve rotational force, without any linear force.

How do I know what size torsion spring I need?

Dimensional Limits: Torsion springs are mounted over a rod or shaft. Suggested shaft diameter should leave 10% clearance within the inside diameter of the torsion spring for deflections. For greater deflections, reduce the shaft size.

What is the formula for torsion springs?

Divide the torque by this angle to obtain the spring constant (rate) you require. (Rate = Torque / Degrees) Or, if the torque required to rotate the spring through a given angle is required, use the formula (Torque = Rate x Degrees).

What are the parameters of torsion springs?

9 x 7 spring and weight chart Garage Door MaterialSizeTorsion Spring Size Steel, single-layer, 24ga 9x7 218x2x23 Steel, double-layer, 24ga, insulated 9x7 225x2x24 Steel, triple-layer, 24/27/ga, insulated 9x7 225x2x29 Steel, triple-layer, 27/27ga, insulated 9x7 262x2x3610 more rows Nov 11, 2022

What is the clearance of a torsion spring shaft?

The critical physical parameters for torsion springs are identified below. Wire Diameter: The spring wire is the circular metal wire wound into a helical coil. Inner Diameter (ID): The springs ID is the diameter of the coils measured from the inner surfaces of the helical coils.

What is the torque of a torsion spring?

Torsion spring torque is calculated the same way you calculate a working load. To calculate the torque of a torsional spring you must divide the spring rate by the amount of degrees of deflection your spring will be required to travel.

What do the numbers on a torsion spring mean?

The letter T stands for Torsion Spring. The first series of numbers indicates Wire Diameter=WD. The second series, following the first hyphen, indicates Outer Diameter=OD. The third series, following the second hyphen, indicates Total Coils=TC. The fourth series, following the third hyphen, indicates Material Type.

CUSTOM TORSION SPRINGS SPECIFICATION FORM - Lee Spring 2025

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