Assembly of outer ring and knuckle, and wheel bearing assembly including same

A wheel bearing assembly, comprising:

• a bearing hub coupled to a wheel and configured to be rotated with the wheel around a rotation axis;
• an outer ring comprising a body having a hollow formed in an axial direction of the rotation axis and configured to surround a portion of the bearing hub, and a mounting portion extending in an outer radial direction and a circumferential direction of the body and having a plurality of first mounting holes formed thereon;
• a plurality of rolling elements disposed between the bearing hub and the outer ring;
• and
• a knuckle configured to accommodate a portion of the body and connect the outer ring to a suspension system, and having a plurality of second mounting holes corresponding to the plurality of first mounting holes,
• wherein the outer ring comprises one of a mating protrusion and a step portion, into which the mating protrusion is inserted, when the step portion is matched with the mating protrusion in the axial direction of the body,
• the knuckle comprises the other one of the mating protrusion and the step portion,
• the mating protrusion is formed to protrude from an outer circumferential surface of the outer ring in the outer radial direction or to protrude from an inner circumferential surface of the knuckle in an inner radial direction opposite to the outer radial direction, and
• the mating protrusion is configured to partially extend in the circumferential direction.