必须有效控制支承辊两侧轴承座的间距、保持密封件唇口良好接触状态及采用性能、尺寸合格的备件。

To control the clearance between both sides of bearing chuck in back-up roll, keep sealing tips in a good touching state and use correct spare parts both in function and dimension.

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同时，设在上下支承辊装置侧面或机架上的压紧缸、腰块上的移动缸可实现轧辊轴承座与机架间的无间隙轧制。

In addition, using the hold down cylinder, the waist block and the shift cylinder can realize gap-less rolling.

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