The reason is the breakdown on the gear pump oil and oil (a)       

The hydraulic oil pump will produce overflow breakdown and skeleton oil seal oil seal oil series. Gear pump on oil will seriously affect the normal operation of the machine. The reason, there are the following four aspects: first to introduce today Xiaobian first.

1, parts manufacturing quality is poor

(1) quality of oil seal

The lip shape is unqualified, tightening spring loose, causing the tightness test of gear pump into the host after the leak, easy to breakdown on oil and oil seal. Should replace the seal and test its material, shape and size.

(2) machining and assembly quality of gear pump

Due to the quality of gear pump machining and assembly, the gear shaft rotation center is not concentric with the front cover stop, resulting in eccentric wear of the oil seal. The symmetry and displacement of the pin hole of the front cover and the coaxiality of the front sealing hole to the oil seal hole of the framework should be checked.

(3) sealing ring material and processing quality

Because the problem of sealing ring material and machining quality, resulting in cracks and scratch the sealing ring, cause two seals or even failure, a lot of pressure oil into the framework oil seal (here is a low voltage channel) to return oil, which caused the breakdown on oil and oil seal. Sealing ring material and processing quality should be checked.

(4) machining quality of transmission spline shaft

Because of the external spline spline transmission spline shaft and gear pump connected and mounted on the loading machine, if the coaxial spline shaft spline processing of the ultra poor, will not cause the swing rotary concentric gear shaft oil seal oil seal, influence, cause on oil. Check and control the internal and external spline shaft spline coaxial.