This tapered roller bearing supports the steering knuckle on the front axle of the host tractor. It carries both radial and axial loads from the wheel assembly and maintains the alignment of the kingpin axis. A worn bearing produces play at the wheel hub, leading to uneven tire wear and imprecise steering response. The bearing is manufactured to the same internal geometry as the original assembly, so it seats against the knuckle shoulder and the hub without requiring additional shims. On installation, ensure the bearing race is fully seated in the housing and the retaining nut is torqued to the specification for the axle assembly.