The basic difference between hydraulic cylinder and cylinder

What are the differences between hydraulic cylinders and cylinders?
(1) The cylinder is a pneumatic system component that converts pneumatic energy into mechanical energy. A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. Generally, the pressure of the cylinder used in the pneumatic system is within the range of 0.2-2Mpa. In fact, it cannot be used as a high-power power component, but in the case of a hydraulic system, the hydraulic cylinder can be compared. large power components.
(2) The air used by the cylinder is an inexhaustible energy supply from the perspective of its own medium, and there is no difficulty in supplying costs. At the same time, the used non-polluting gas can be released directly for easy disposal, but the hydraulic cylinder is Can't. Engineering hydraulic cylinder
(3) The air resistance used by the cylinder is very small, but the hydraulic oil used by the hydraulic cylinder will have strong resistance.
(4) Because the compression rate of air is much greater than that of liquid, the stability of work will be far worse. The hydraulic cylinder is an actuator that plays a very important role in the hydraulic system. It can convert hydraulic energy into mechanical energy, and can be used with various The transmission mechanism cooperates to complete various mechanical movements. The hydraulic cylinder has the characteristics of simple structure, large output force, stable and reliable performance, convenient use and maintenance, and wide application range.
(5) The normal operation of the hydraulic cylinder depends on the hydraulic oil. The oil is a non-renewable resource and cannot be recycled, and the used hydraulic oil will affect the environment; the pneumatic cylinder is different, it uses air to complete the operation , the air is inexhaustible, there is no difficulty in cost and supply, and the used gas is directly discharged into the atmosphere, which is convenient for treatment and can be reused without any pollution.