1, because the fluid flow resistance and leakage is large, so the efficiency is low.
If handled improperly, leaks not only pollute the site, but can also cause fire and explosion accidents.
2, because the work performance is susceptible to temperature changes, it is not suitable for high or very low temperature conditions to work.
3, the hydraulic components manufacturing precision requirements are high, so the price is more expensive.
4, due to the leakage of liquid media and the impact of compressibility, can not get a strict transmission ratio.
5, hydraulic transmission failure is not easy to find the cause of the use and maintenance requirements have a higher level of technology.