Wheel Hub Unit

Wheel hub assembly is an integrated component combining bearings, hub, flange, seals, and sensors (in modern vehicles), serving as the critical connection between the wheel and vehicle body.
Core Components:
Bearing System: Double-row angular contact ball bearings or double-row tapered roller bearings, forming the load-bearing and rotational core
Hub Flange: Connects the wheel and brake disc, typically integrated with the bearing inner ring
Sealing System: Multi-lip seal structure prevents dust and moisture ingress while retaining lubricant
Sensor Assembly (3rd Generation): Integrates ABS wheel speed sensors to provide vehicle speed signals to the control system