This joint used to connect two rods which is under a tensile load. There is always axial or linear line of action of load. It is divided into 6 parts like collar, tapper pin, one eye end, fork end, knuckle pin.
Application of Knuckle joint:
1) The joint between the tie rod joint of a roof truss.
2) The joint Tension link in bridge structure.
3) Tie rod joint of the jib crane.
4) Link of roller chain, bicycle chain and chain straps of watches.
