In mechanical systems, a bellcrank cam combines the functionalities of a bellcrank and a cam mechanism to facilitate specific types of motion or force transmission. The cam portion of this component consists of an eccentric or irregularly shaped surface that rotates about an axis, producing varying degrees of linear or angular displacement as it interacts with other components. When integrated with the bellcrank, this cam mechanism converts the rotational motion of the cam into a different type of motion or force through the pivoting action of the bellcrank arm.