| 摘要 |
PROBLEM TO BE SOLVED: To provide a cover of a wheel bearing device capable of effectively preventing water from entering even when externally fitted to a bearing ring, and a manufacturing method thereof.SOLUTION: A cover 20 includes: a cover body part 21 arranged on one end side in an axial direction of an outer ring 2; an outside cylindrical part 22 extending from the cover body part 21 toward the other end in the axial direction of the outer ring 2; and an inside cylindrical part 23 folded radially inward from an end part on one end side in an axial direction of the outside cylindrical part 22 and extending toward the other end side in the axial direction thereof. An inner peripheral surface 23a of the inside cylindrical part 23 is a fitting surface externally fitted to an outer peripheral surface 2c2 of the outer ring 2 with interference fit.SELECTED DRAWING: Figure 1 |
