The Method of Assembling The Hydraulic Cylinder

1.Before assembling the hydraulic cylinder, all parts must be carefully cleaned.

2. The sealing devices at all locations of the hydraulic cylinder should be correctly installed.

①When installing the O-ring, do not pull it to the extent of deformation, nor roll it while installing, otherwise it may form a distorted shape and cause oil leakage.

②When installing Y-shaped and V-shaped sealing rings, pay attention to their installation direction to avoid oil leakage due to installation. For the Y-ring seal, its lip faces the pressurized oil cavity. In addition, when installing Yx ring seals, it is necessary to distinguish whether they are for shafts or holes to avoid incorrect installation. The V-shaped sealing ring is composed of support rings, sealing rings and pressure rings of different shapes. When the pressure ring presses against the sealing ring, the support ring can make the sealing ring form a shape to achieve a sealing effect. During installation, the opening of the sealing ring should face the pressure oil chamber. When adjusting the pressure ring, it should be limited to no oil leakage. Do not press it too tightly to prevent excessive sealing resistance.

③ If the sealing device is compatible with the sliding surface, an appropriate amount of hydraulic oil should be applied during assembly.

④ The O-rings and dust-proof rings that have been disassembled should all be replaced with new ones.

3.When tightening threaded connection parts, a wrench should be used and the torque should meet the standard requirements.

4.After the piston and the piston rod are assembled, it is necessary to measure whether their coaxiality and straightness in the length exceed the tolerance.

5.After assembly is completed, when the piston assembly moves, there should be no sense of obstruction or uneven resistance.

6.When installing the hydraulic cylinder onto the main machine, a sealing ring must be added between the oil inlet and outlet joints and tightened properly to prevent oil leakage.

7.After assembly as required, several reciprocating movements should be carried out under low pressure to expel the gas in the cylinder.