| 摘要 |
The invention provides a shoe for a hydraulic apparatus and manufacturing method thereof, by which production cost can be lowered without making a sliding-contact surface uneven by a welding process. The shoe comprises a main body (10) provided on one side (10a) thereof with a concave spherical surface (12) to which a sphere is slidably engaged, and on the opposite side (10b) thereof with a locking portion (14) and a sliding-contact plate (11) provided with an engaging portion (20) by which to be engaged with the locking portion (14) to make contact with the opposite side (10b), wherein the sliding-contact plate (11) comprises a first layer (18) to make contact with the opposite side (10b) and a second layer (19) laminated on a region of the first layer (18) leaving uncovered welding portion (21) so that its surface serves as a sliding-contact surface (19a), and the first layer (18) is welded to the main body (10) at the welding portion (21). The locking portion (14) is a protruding portion located at a central portion of the opposite side (10b) of the main body (10), and the engaging portion (20) is a bore portion by which to be engaged with the protruding portion.
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