A knuckle joint is a form of pin joint that is used to connect two tension-loaded components. Otherside, A cotter joint, also known as a socket and spigot joint, is a way of connecting two coaxial rods temporarily.
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Difference between Knuckle joint and Cotter joint:
In the table below, you’ll find some essential distinctions between these joints:
|S.No||Knuckle joint||Cotter Joint|
|01.||The knuckle joint connects two rods whose axes either coincide or intersect and lie in the same plane and are subjected to axial tensile force transmission.||The cotter joint connects two co-axial rods that are subjected to axial force.|
|02.||When angular displacement is required, a knuckle joint is employed.||When there is no angular displacement between two rods, a cotter joint is utilized.|
|03.||The knuckle joint is designed to handle high-tensile loads.||For minor tensile and compressive forces, cotter joints are utilized.|
|04.||Allow for angular movement between the rods.||Allowing angular movement between rods is not permitted.|
|05.||Even when two shafts are in motion, a Knuckle joint is designed to enable certain mobility or angle between them.||The cotter joint is designed to help aligned shafts rotate in the same direction.|
|06.||There is no taper or clearance offered.||Clearance and taper are included.|
|07.||Bearing failure is a common incident.||Bearing failure is not a problem|
|08.||Part of the Knuckle Joints are the fork end, Rod end, Split pin||Part of the Cotter Joints are the cotter, spigot, socket|
|09.||A circular pin is used in the knuckle joint||A rectangular pin is used in the cotter joint.|
|10.||Used in tie bars, bicycle chain links, and all shifting mechanisms’ joints.||Used to unite two rods with a pipe, and to join the piston rod to the crankshaft head in cotter foundation bolts.|
Related Also- Universal Joint: All you need to Know
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Abhishek Tiwary is a blogger by passion and a Quality Engineer by profession. He completed his B.Tech degree in the year 2017. Now working in a reputed firm. He loves to share his knowledge with others.