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针对大型立式水泵油润滑导轴承可靠性差的情况，介绍一种由油润滑轴承改造而来的采用 Ｐ２３ 塑料的护管式清水润滑轴承的成功应用情况。对其结构原理进行简要分析，并与传统水润滑轴承结构进行比较。指出这种轴承应用应注意的问题。
In view of the poor reliability of the large vertical water pump oil lubricated guide bearing, the successful application of the tubular clear water lubricated bearing adopting P23 plastic which is transformed from the oil lubricated bearing is introduced. The structure principle of a brief analysis, and compared with the traditional water-lubricated bearing structure. Pointed out that this bearing application should pay attention to the problem.