Due to improper cylinder assembly and long-term use, pneumatic actuators (cylinders) are prone to internal and external leakage, insufficient output force and uneven movement, poor cushioning effect, piston rod and cylinder head damage and other fault phenomena. (1) The cylinder appears internal and external leakage, generally due to the piston rod installation eccentricity, insufficient supply of lubricating oil, sealing ring and seal ring wear or damage, the cylinder has impurities and piston rod has bruises and so on caused. Therefore, when the cylinder appears inside and outside leakage, the center of the piston rod should be readjusted to ensure the coaxial degree of the piston rod and cylinder tube; it is necessary to check frequently whether the oil mist is working reliably to ensure good lubrication of the actuator, and to replace the sealing ring and seal ring when there is wear or loss ring, if there are impurities in the cylinder
When there are bruises on the piston rod, the new one should be replaced. (2) The cylinder's output force is insufficient and the movement is not smooth, generally due to the piston or piston rod is jammed, poor lubrication, insufficient gas supply, or in the cylinder has condensate and impurities and other reasons caused. In this regard, the center of the piston rod should be adjusted, the work of the oil mist is checked to be reliable, and whether the gas supply pipeline is blocked.
When condensate and impurities are in the cylinder, they should be removed in time. (3) The buffer effect of the cylinder is not bad, generally due to the cushioning seal ring wear or adjustment screw damage caused.
At this point, the sealing ring and adjustment screws should be replaced. (4) The piston rod and cylinder head of the cylinder are damaged, which is usually caused by the eccentric installation of the piston rod or the ineffectiveness of the buffer mechanism. In this regard, the central position of the piston rod should be adjusted; Replace the buffer seal ring or the adjustment screw ...
