Bearing (mechanical)Centripetal forceClassical mechanicsCrank (mechanism)Cycloid gearCylinder head portingEpicyclic gearingFlexure bearingFluid bearingFranz ReuleauxGearKinematicsLinkage (mechanical)Magnetic bearingMechanism (engineering)Multi-valveNon-circular gearPiston valvePlain bearingRolling-element bearing