Revolutions per minute
Unit of rotational speed / From Wikipedia, the free encyclopedia
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For other uses, see Revolutions per minute (disambiguation).
"rpm" redirects here. For other uses, see RPM (disambiguation).
Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min, or r⋅min−1) is a unit of rotational speed (or rotational frequency) for rotating machines. One revolution per minute is equivalent to 1/60 hertz.
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