See more problem of pipe fitting machine hydraulic cylinder
 
1. The hydraulic cylinder creeping.Main reason has two: one is the moment of oil cylinder or place have just completed a long cylinder, began to appear when using prostrate, sometimes also can see foamy of hydraulic oil in the hydraulic tank overflow, this is because the system has been filled by air, and cleaning the air.The second is the mechanical resistance is too big, must overhaul cylinder, piston and piston rod.
2. The lack of oil cylinder thrust load when the cylinder is not action.To do the following experiments: in reversing valve cylinder empty load operation, if the oil cylinder to the mountain of elasticity, and sometimes extended and retracted speed is faster than normal, to be able to conclude that the oil cylinder.Because the oil cylinder into the impurities or iron piston severe damage on the oil seal and bearing ring, make the oil cylinder rod cavity and rodless cavity connected, constitutes the differential circuit.
3. The oil spill, cohesion by the hydraulic cylinder tubing and tubing o-rings damage caused by the external leakage, internal leakage caused by the cylinder head and piston rod seal failure is also compared to see more.
4 cylinder, hydraulic cylinder cylinder is mainly due to excessive wear ring between the piston and cylinder wear after directly touch the piston and cylinder, piston hardness hardness is greater than the cylinder, piston will cutting cylinder and the cylinder.Cylinder, hydraulic cylinder rise and drop all weakness, cylinder, severe cylinder that is invalid.
5. The deformation, deformation is mainly the hydraulic cylinder hydraulic cylinder or loading overweight because by external lighting strike.
6. The hydraulic cylinder piston rod is damaged, such as the piston rod is scratched or piston rod outside appearance and hollow cavities are interlinked. |
