20Sh-9型中开泵泵轴由两个单列向心球轴承支承，轴承装在泵体两端的轴承体内，用黄油润滑，双吸密封环用以减少水泵压水室的水漏回吸水室。

　　装配与拆卸

　　1 、装配转子部件:依次将叶轮、轴套、轴套螺母、填料套、填料环、填料压盖，挡水圈、轴承部件装在泵轴上，并套上双吸密封环，然后装上联轴器。

　　2、将转子部件装在泵体上，调整叶轮的轴向位暈到两侧双吸密封环的中间加以固定，将轴承体压盖同固定螺钉紧固。

　　3、装上填料，放好中开面纸垫，盖上泵盖打紧螺尾柱销后，拧紧泵盖螺母，最后装上墳料压盖。但不要将填料压得太紧，填料过紧会使轴套发热，耗费功率较大，也不要压得太松，过松会使液体渗漏大，水泵效率降低。                                          本厂合作单位有:鹤岗市兴阳煤矿;南丹县汇源选矿厂;崇义县青山钨锡矿公司;西部矿业公司巴彦淖尔分公司;礼县马泉金矿;新疆有色金属工业集团金铬矿公司;连平县华丰钢铁厂;繁峙县宏伟铁矿;广东省大宝山矿业公司;赣州市茂源矿业公司等。                                          20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵;20Sh-9型中开泵