Torsion Springs
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Spring length .
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Wire diameter.
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Inside diameter.
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Number of coils and/or pitch .
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Initial loading when fitted, working load, and amount of movement under load .
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Length of legs and angle to one another, when free and when under load .
Guide to Torsion Springs Specification
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A. Wire Diameter
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B. Spring length
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C. Number of coils
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D. Length of legs and angle to one another, when free and under load
E. Direction of coiling
F. Inside diameter. Allow for a decrease in diameter as the spring is wound up, to avoid it binding on the rod or spindle around which it operates.
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G. Load at installed position and at operating position. Alternatively specify amount of deflection at any load.
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H. Rate of load per unit of rotation
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I. Stress relieving. Not all torsion springs require stress relieving.
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