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、零部件加工精度的影响问题，在200吨液压机液压缸的制造过程中应严格控制缸体内壁和活塞杆表面加工精度，特别是几何精度，尤其直线度是关键。
3、液压缸有混入气体而产生的低速爬行。这种情况可通过反复运行液压缸达到排气的目的，必要时在管路或液压缸的两腔设置排气装置，在四柱四柱液压机液压系统工作时进行排气。
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.