Working Principle of Prestressed Lifting Jack
The pressure is the same everywhere in the liquid, so in a balanced system, the pressure exerted on the smaller piston is smaller, and the pressure exerted on the larger piston is larger, which can keep the liquid at rest. Therefore, through the transmission of the liquid, different pressures on different ends can be obtained, so that a transformation purpose can be achieved. The hydraulic electric jacks we commonly see use this principle to achieve force transmission.
Technical Parameter of Hydraulic Prestressed Lifting Jack
| Model specifications | Nominal tensile force (KN) | Nominal oil pressure (Mpa) | Through-hole diameter (mm) | Install limit plate aperture (mm) | Mounting tool (mm) | Outside diameter size (mm)
Diameter * Height |
| YDC650 | 650 | 48 | 72 | 99 | 95 | 200*385 |
| YDC1000 | 1000 | 50 | 78 | 111 | 111 | 230*385 |
| YDC1500 | 1500 | 52 | 94 | 150 | 150 | 270*390 |
| YDC2000 | 2000 | 53 | 118 | 177 | 177 | 320*400 |
| YDC2500 | 2500 | 52 | 128 | 210 | 185 | 345*400 |
| YDC3000 | 3000 | 52 | 135 | 190 | 185 | 370*400 |
| YDC3500 | 3500 | 51 | 160 | 232 | 232 | 420*400 |
| YDC4000 | 4000 | 52 | 165 | 252 | 252 | 450*410 |
| YDC5000 | 5000 | 52 | 196 | 260 | 265 | 500*410 |
| YDC6500 | 6500 | 53 | 220 | 295 | 235 | 580*420 |
| YDC10000 | 10000 | 50 | 270 | 440 | 415 | 740*570 |
Product Details of Hydraulic Prestressed Jack
| 1 | Locating nut | 2 | Plug |
| 3 | Cylinder | 4 | Piston |
| 5 | Sealing Plate | 6 | Clamp Ring |
| 7 | Ball Type Head |
Application field of Hydraulic Prestressed Lifting Jack
Prestressed Double Acting Lifting Jack is widely used in power maintenance, bridge maintenance, lifting of heavy objects, static pressure piles, foundation settlement, bridge, and ship repair and construction, especially in highway and railway construction, mechanical adjustment, equipment disassembly, etc.
Matters needing attention of Hydraulic Prestressed Lifting Jack
1. Before use, check whether all parts are normal.
2. Strictly abide by the regulations in the main parameters when using, and avoid super high overload, otherwise, when the lifting height or lifting tonnage exceeds the regulations, serious oil leakage will occur on the top of the electro-hydraulic jack.
3. The center of gravity of the heavy object should be moderate, the focus point of the electro-hydraulic jack should be selected reasonably, the bottom surface should be leveled, and the soft and hard conditions of the ground should be considered at the same time.
4. After the electric hydraulic jack lifts the heavy object, the support should be used to support the heavy object in time. It is forbidden to use the ultra-high pressure and large tonnage electric jack as the support. If you need to support heavy objects for a long time, please choose a self-locking jack.
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Hydraulic Bridge Construction Machine Pretensioned Prestressing Jack Double Acting Images
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