滚动轴承保持架是由金属或塑料。
松开保持架并折叠。
安装碳罐保持架。
保持架发生了轻微的磨损，但并不影响轴承的正常工作。
The cage has experienced light wear with little effect on the normal operation of bearing.
卷扬机加装保持架，形成双面支撑星轮的结构，可承受强烈冲击。
Hoist with cage, forming double support structure of the star wheel, can withstand strong shock.
卷扬机加装保持架，形成双面支撑星轮的结构，可承受强烈冲击。
Hoist with cage, forming double support structure of the star wheel, can withstand strong shock.
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