Is the hydraulic cylinder or pneumatic cylinder good, their respective advantages?
Cylinder: once in place, hydraulic cylinder: according to the needs of the lift, cylinder speed, hydraulic cylinder relative to the cylinder slower, gas compression ratio, liquid compression ratio is small.
The hydraulic operation is stable, the output power is large and the cost is high. The air pressure is fast, the output force is small, and the cost is low.
Each has its advantages!Hydraulic relatively speaking, the production is more stringent!The air is relatively clean, because the medium is filtered air!
Operating pressure: the maximum working pressure of the hydraulic cylinder can be up to more than 20 MPa and the cylinder is 1 MPa High, usually at 0.5-0.6 mpa. In other words, the same size cylinder hydraulic output to 20 times the cylinder.Power source: the hydraulic cylinder needs pumping station to provide high pressure oil; the cylinder needs the air source; if not, use the air compressor.Speed: the hydraulic cylinder is slower than the cylinder, and is more stable than the cylinder. Cylinder speed can not be too low (such as a few millimeters per second), otherwise it will crawl.Environment: the hydraulic system will inevitably leak, relatively dirty; pneumatic system is very clean; hydraulic pump noise; pneumatic; air source, the noise is very small; with air compressor, the noise is greater than the hydraulic pump.Cost: pneumatic much cheaperIn addition, if the pressure is high (12 tons), the process is not large (about 100mm), there is a compressed air source, it needs clean environment, low noise, low cost, you can use the gas-liquid booster cylinder.
