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Crank may refer to:


  • Crank (mechanism), in mechanical engineering, a bent portion of an axle or shaft, or an arm keyed at right angles to the end of a shaft, by which motion is imparted to or received from it
  • Crankset, the component of a bicycle drivetrain that converts the reciprocating motion of the rider's legs into rotational motion
  • Crankshaft, the part of a piston engine which translates reciprocating linear piston motion into rotation


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