The hydraulic jack is a simple lifting device with a small lifting height. It has two types: mechanical and hydraulic. The mechanical jack also has two types: the rack type and the screw type. For mechanical maintenance work, not suitable during bridge repair. At the same time, pay attention to the use of hydraulic oil, because the quality of hydraulic oil directly affects whether the jack can work normally. Therefore, hydraulic oil is required to have good performance. In hydraulic jack, hydraulic oil should have the following functions:  
1. Transmission, that is, to transfer the piston in the hydraulic jack to the actuator.  
2. Lubricate, lubricate moving elements such as pistons, check valves, oil return valve stems and actuators.  
3. Absorb and take out the heat generated by the hydraulic jack hydraulic device.  
4. Anti-rust, preventing corrosion of the metal used in the hydraulic components in the hydraulic jack.  In addition, hydraulic oil also needs to have the following performance requirements.
5. compatibility. Good compatibility with metals, seals, rubber hoses, coatings, etc.
 
Hydraulic jack is widely used in power maintenance, bridge maintenance, heavy lifting, static pile pressing, foundation settlement, bridge and ship repairing, especially in road and railway construction, mechanical adjustment, equipment dismantling, etc. Due to the wide range of hydraulic applications, the stroke range also needs to be relatively wide.
If you choose to buy a hydraulic jack or want to get more information, please contact us directly, email: sales1@leadcrete.com