Disc spring

Disc spring from Thomas Potter Ltd

Often called a Belville washer these washers are typically used as springs, or to apply a pre-load of flexible quality to a bolted joint or bearing.

Properties of disc springs include: high fatigue life, better use of space, low creep tendency and high load capacity with a small spring deflection.

Multiple disc springs may be stacked to modify the spring constant or amount of deflaction.

Stacking in the same direction will add the spring constant in parallel, creating a stiffer joint (with the same deflection).

Stacking in an alternating direction is the same as adding springs in series, resulting in a lower spring constant and greater deflection.

Mixing and matching directions allow a specific spring constant and deflection capacity to be designed.

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