The steering rack is a critical feature in all Automotive vehicles. The most common type of steering rack is one that incorporates a rack and pinion system that is driven by the steering wheel from the user. As the user turns the steering wheel the pinion drives the rack left and right, resulting in the wheels changing angle. Maintaining consistent contact between the rack and pinion gears is safety critical as disengagement of the gears would stop the driver having control over the direction of the vehicle.
To maintain a consistent engagement between the rack and pinion, a steering yoke (guide bearing) is employed. This device, in combination with a spring feature, is pressed onto the rack, pushing it against the pinion. The steering rack has to move through the steering yoke during steering operation meaning that friction at this interface significantly affects the steering feel. A low friction bearing will provide a smooth on-centre steering feel for the user, which should last for the lifetime of the vehicle.
Saint-Gobain NORGLIDE® Bearings offer convenient and cost-effective solutions for a wide range of automotive applications. These maintenance free and wear resistant bearings are capable of handling direct torque transfer, torque slip, axial retention, controlled collapse and radial loading between the mating components.