Torque density
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Torque density is a measure of the torque-carrying capability of a mechanical component. It is the ratio of torque capability to volume and is expressed in units of torque per volume. Torque density is a system property since it depends on the design of each element of the component being examined and their interconnection.
Torque density is useful during the
rolling mill
, space is often dictated by the configuration of current components. There may be several types of devices that can perform the function of an existing component that must be replaced. The relative torque densities of the devices may be an important determinant for which design is ultimately selected, although it will often compete with other factors such as cost, ease of maintenance, time to install, operating costs and potential failure modes.
Units
In
SI units, torque density is expressed in joules per cubic metre or equivalently newton-metres per cubic metre (though dimensionally equivalent to the pascal, that is usually not used for this purpose). Small amounts can be expressed in newton-millimetres
per cubic millimetre.
In
ounce-force
inches per cubic inch.