Wheel bearing assembly for vehicle

A wheel bearing assembly (100) which rotatably mounts and supports a wheel of a vehicle on a vehicle body, the wheel bearing assembly comprising:

• a wheel hub (200) on which the wheel of the vehicle is mounted and which is configured to rotate together with the wheel of the vehicle;
• at least one inner ring (300) mounted on an outer circumferential surface of the wheel hub (200) in a press-fitting manner;
• an outer ring (400) mounted on and fixed to a vehicle-body-side member;
• a plurality of rolling elements (500) configured to rotatably support the wheel hub (200) and the inner ring (300) relative to the outer ring (400);
• and
• a constant velocity joint (600) coupled to the wheel hub (200),
• wherein the constant velocity joint (600) is configured such that an outer axial end surface of a shoulder portion (630) is in contact with an inner axial end surface of the wheel hub (200) or the inner ring (300), and
• wherein a low-friction metal alloy layer (700) is provided on one side of a contact surface between the outer axial end surface of the shoulder portion (630) of the constant velocity joint (600) and the inner axial end surface of the wheel hub (200) or the inner ring (300).