A rack and pinion is a type of linear actuator that comprises a circular gear (the pinion) engaging a linear gear (the rack), which operates to translate rotational motion into linear motion. Driving the pinion into rotation causes the rack to be driven linearly and is commonly used in the steering system of cars to convert the rotary motion of the steering wheel to the side-to-side motion in the wheels. The steering wheel rotates a gear that engages the rack. This often reduces the amount of effort required to steer the car.
Part designed, assembled, simulated, and Rendered on CATIA V5.