lower ball cover
... 下轴承 lower bearing 下轴承盖 lower ball cover 下轴承箱 lower bearing housing ...
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下轴承箱盖 lower bearing housing cap
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为了承受高负荷，如在实际情况下，固体铸铁轴承端盖投入使用。
In order to withstand high loads, as is found in practical circumstances, solid cast iron bearing end shields come into use.
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