Joint

Interface between two parts.

Ball Joint

A flexible joint consisting of a ball in a socket - locks the two parts in translation, but allows all degrees of rotation.

Rigid Joint

Prevents adjacent parts from moving or rotating past one another.

Roller Joint

Allows adjacent parts to move controllably past one another.

See also: Ball Joint, Clamping Force, Lap Joint, Rigid Joint, Roller Joint, Splice, Tee Joint.