塑料拖链根据支撑板最大孔径Dmax来确定链板高度hg和拖链型号。机床附件拖链根据拖链功能要求来确定支撑板型式的拖链的弯曲半径。机床附件拖链当拖链需承载较大管，缆负荷时，应选用高强度支撑板型-整块式;机床附件拖链当管缆的管接头尺寸大于支撑板内腔孔径或须经常拆装，维修等时，可选用分开式类型支撑板;新型拖链安装管缆的规格品种较多时，可选用框架式支撑板。

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