Front Steering Knuckle: Description and Operation

DESCRIPTION






The steering knuckle is a single casting with legs machined for attachment to the front strut assembly and lower control arm ball joint. The steering knuckle also has machined abutments on the casting to support and align the front brake caliper. The knuckle also holds the hub and bearing, and supports the driveshaft. The hub and bearing is positioned through the center of the knuckle. The driveshaft outer Constant Velocity (C/V) stub shaft is splined to the center of the hub.

OPERATION
The steering knuckle provides for steering control of the vehicle, supports the brake caliper and absorbs the loads exerted during vehicle braking. It also supports the front (driving) hub and bearing and driveshaft stub axle assembly.
The steering knuckle pivots with the strut assembly on the lower control arm ball joint, allowing the vehicle to be steered.