Main parameters of hydraulic cylinder

The main parameters of the hydraulic cylinder include pressure, flow, size, piston stroke, movement speed, pushing and pulling force, efficiency and hydraulic cylinder power.

1 pressure: pressure is the pressure of oil acting on unit area. The calculation formula p=f/a is the load acting on the piston divided by the effective working area of the piston. It can be seen from the above formula that the pressure value is established by the existence of load. On the effective working area of the same piston, the greater the load, the greater the pressure required to overcome the load. In other words, if the effective working area of the piston is certain, the greater the oil pressure, the greater the force generated by the piston. Usually, we say the rated pressure is the pressure that the hydraulic cylinder can work for a long time. According to the rated pressure, the pressure classification of hydraulic cylinder is shown in the following table: unit: MPa

Level pressure range 0~2.5 low pressure ＞ 2.5~8 medium pressure ＞ 8~16 medium high pressure ＞ 16~32 high pressure ＞ 32 * high pressure * high allowable pressure refers to the * limit pressure that the hydraulic cylinder can withstand in an instant; The pressure test pressure refers to the test pressure to be borne when checking the quality of the hydraulic cylinder. Most countries stipulate that these two pressures are less than or equal to 1.5 times the rated pressure.

2 flow: flow is the volume of oil passing through the cylinder barrel * effective cross-sectional area in unit time. The calculation formula is q=v/t=va, where V represents the volume of oil consumed in one stroke of the hydraulic cylinder piston, T represents the time required for one stroke of the hydraulic cylinder piston, V represents the speed of the piston rod, and a represents the effective working area of the piston.

3 piston stroke: piston stroke refers to the distance traveled between two * when the piston reciprocates. Generally, after meeting the stability requirements of the oil cylinder, the standard stroke similar to the actual working stroke is selected.

4 movement speed of piston: the movement speed is the distance that the pressure oil pushes the piston to move in unit time, which can be shown as v=q/a.

5. Size specification: the size specification mainly includes the inner and outer diameter of the cylinder barrel, piston diameter, piston rod diameter and cylinder head size. These dimensions are calculated, designed and checked according to the use environment, installation form, push force and stroke of the hydraulic cylinder.