| 摘要 |
A lever style constant contact side bearing assembly having a base member with a first joint portion and a lever member with a second joint portion that cooperates with the first joint portion to form a translationally restrained and rotationally free joint. The lever member can have a spring reaction portion associated with a spring element that is activated responsive to movement of the spring reaction portion. The lever member can also have upper and lower contact portions adapted to engage, respectively, the base member and a wear plate on a truck bolster or car body. The upper and lower contact portions can be replaceable or have replaceable wear portions, and can be located near the centerline of the truck bolster.
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