1. Low-speed crawling caused by uneven friction of guiding elements in hydraulic cylinder. It is recommended to give priority to the use of metal as the guide support, such as the use of non-metallic support ring, it is recommended to choose a non-metallic support ring with good dimensional stability in the oil, especially the thermal expansion coefficient should be small, in addition to the thickness of the support ring, must strictly control the size tolerance and thickness uniformity.
2, the impact of parts processing accuracy, in.200 ton hydraulic pressThe machining accuracy of the inner wall of the cylinder and the surface of the piston rod should be strictly controlled in the manufacturing process of the hydraulic cylinder, especially the geometric accuracy, especially the straightness is the key.
3. The hydraulic cylinder has low-speed crawling caused by mixing gas. In this case, the purpose of exhaust can be achieved by repeatedly running the hydraulic cylinder. If necessary, the exhaust device is set up in the two chambers of the pipeline or the hydraulic cylinder.four-column hydraulic pressBleed the air when the hydraulic system operates.
4. Low-speed crawling caused by improper design clearance of hydraulic cylinder of 200-ton hydraulic press. The sliding fit clearance between the internal piston and cylinder body, piston rod and guide sleeve of the hydraulic cylinder can be correctly designed.
5. For the low-speed crawling of the hydraulic cylinder of the four-column hydraulic press caused by the material problem of the seal, it is recommended that the combined sealing ring with PTFE as the seal is preferred under the conditions permitted by the working conditions.