The Bell Crank also known as a rocker arm, is a mechanical component used to transfer motion or change the direction of force in a mechanical system. It consists of a pivoting lever or arm connected to two or more linkages.

Attributes:
• Reduce friction.
• Ability to withstand applied forces and mechanical stresses.

Applications:
The Bell cranks play a vital role in many mechanical systems, enabling motion transfer, force redirection, and control actuation.