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Things to note when disassembling and assembling hydraulic cylinders
Before disassembling the hydraulic cylinder barrel, the hydraulic circuit should be depressurized. Otherwise, when the oil pipe joint connected to the oil cylinder is loosened, the high-pressure oil in the circuit will spray out quickly. When depressurizing the hydraulic circuit, you should first loosen the handwheel or pressure regulating screw on the relief valve, etc. to unload the pressure oil, and then cut off the power supply or power source to stop the hydraulic device. When disassembling, avoid damaging the threads on the top of the piston rod, the oil port threads, the surface of the piston rod, the inner wall of the cylinder liner, etc. In order to prevent slender parts such as piston rods from bending or deforming, they should be supported and balanced by spacers when placed.
Taking a hydraulic cylinder as an example, it consists of: cylinder barrel, piston rod (cylinder rod), piston, and end cover. The quality of its processing directly affects the life and reliability of the entire product. The piston rod has high processing requirements. Its surface roughness is required to be Ra0.4-0.8um, and it has strict requirements on coaxiality and wear resistance. The basic feature of the cylinder rod is the processing of a slender shaft, which is difficult to process and has always troubled processing personnel.
The main cause of piston rod strain is: after the dust ring becomes brittle and falls off in a lump, it not only loses its dust-proof effect, but also accumulates a lot of dust and magazines, causing the piston rod to be directly ground with impurities, causing the piston rod to be strained, and the scratches will then scratch the cylinder mouth rubber sealing assembly, causing serious leakage of the hydraulic cylinder.
Taking a hydraulic cylinder as an example, it consists of: cylinder barrel, piston rod (cylinder rod), piston, and end cover. The quality of its processing directly affects the life and reliability of the entire product. The piston rod has high processing requirements. Its surface roughness is required to be Ra0.4-0.8um, and it has strict requirements on coaxiality and wear resistance. The basic feature of the cylinder rod is the processing of a slender shaft, which is difficult to process and has always troubled processing personnel.
The main cause of piston rod strain is: after the dust ring becomes brittle and falls off in a lump, it not only loses its dust-proof effect, but also accumulates a lot of dust and magazines, causing the piston rod to be directly ground with impurities, causing the piston rod to be strained, and the scratches will then scratch the cylinder mouth rubber sealing assembly, causing serious leakage of the hydraulic cylinder.