Cylindrical joint

A cylindrical joint is a two-degrees-of-freedom kinematic pair used in mechanisms.^[1] Cylindrical joints constrain two bodies to a single axis while allowing them to rotate about and slide along that axis. This can be pictured by an unsecured axle mounted on a chassis, as it may freely rotate and translate.^[2] An example of this would be the rotating rods of a table football (foosball).