在推力轴承下圈垫上调心垫圈，可使吊钩相对连接筒在任意方向上摆动。

A core regulating pad ring is padded on the lower ring of the thrust bearing, which can make the hook swing in any directions corresponding to the connecting cylinder.

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在推力轴承下圈垫上调心垫圈，可使吊钩相对连接筒在任意方向上摆动。

A core regulating pad ring is padded on the lower ring of the thrust bearing, which can make the hook swing in any directions corresponding to the connecting cylinder.

youdao