There are five cases: (1) Maintenance after gear wear Gear wear parts of the main tooth meshing involute task surface and gear middle plane. When light and fine wear, the tooth surface can be polished with oil stone, and the middle is flat

高温油泵 密封垫的选用准则是，关于要求不高的场所，可凭经历拔取，不适宜时再改换。但关于那些要求严厉的场所，例如易爆，剧毒和可燃气体以及强侵蚀的液体设备，反响罐和保送管道系统等，则应依据任务压力，任务温度，密封介质的侵蚀性及连系密封面的方式来