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What Is a Hydraulic Cylinder?

A hydraulic cylinder is a mechanical device used to provide linear power in a hydraulic system. It is composed of a cylinder barrel, a piston rod, an end cover, a piston, and seals. The hydraulic cylinder is a linear actuator that converts the pressure energy of the hydraulic oil into the mechanical energy of the linear motion. It is widely used in industrial machinery ranging from construction equipment to aerospace.

Classification of Hydraulic Cylinders

Hydraulic cylinders can be classified into single-acting hydraulic cylinders and double-acting hydraulic cylinders. Single-acting hydraulic cylinders are cylinders with a single working chamber. They use hydraulic oil pressure to extend the piston rod. When the pressure is released, the piston rod is retracted by a spring or its own weight. Double-acting hydraulic cylinders are cylinders with two working chambers. Both push and pull forces can be generated. The pressure in the two working chambers is generated by the hydraulic oil.

Advantages of Hydraulic Cylinders

• • High power density: The hydraulic cylinder uses a liquid as the working medium, and the liquid flows in the cylinder to drive the piston for reciprocating motion, so it has a large power density.
  • High efficiency: The efficiency of the hydraulic cylinder is high, and the energy loss is small, so the overall efficiency is high.
  • Good controllability: The speed of the hydraulic cylinder is easy to adjust, and it can be adjusted with the opening of the valve.
  • Good stability: In the case of overload, the hydraulic cylinder can be protected to ensure that the system does not cause damage.

Installation and Repair of Hydraulic Cylinders

When installing the hydraulic cylinder, the piston and the piston rod should be aligned in the same direction, and the piston should be completely seated in the cylinder. The hydraulic cylinder must be filled with hydraulic oil before use. When replacing hydraulic oil, the hydraulic oil should be clean and free of impurities. If the hydraulic cylinder is damaged, it can be repaired by cleaning, grinding, and replacing the seals.

How to Choose the Right Hydraulic Oil and Oil Seal?

When selecting the hydraulic oil, it is necessary to choose a hydraulic oil with good viscosity and low freezing point that meets the requirements of the hydraulic system. The oil seal is an important part of the hydraulic cylinder. When selecting an oil seal, you should consider the applicable working temperature, pressure and speed, and the characteristics of the sealing material. It is recommended that you select an oil seal from a reputable supplier.

How to Replace Hydraulic Oil and Power Unit?

It is recommended to replace the hydraulic oil at regular intervals. Before replacing the hydraulic oil, the old oil should be drained out completely. When replacing the power unit, you need to select the power unit that meets the requirements of the hydraulic system, and install it according to the installation instructions.

EVER-POWER: Quality Hydraulic Cylinders at Affordable Prices

EVER-POWER is a leading position in the market segment of hydraulic cylinders for mobile machinery in China. Our products mainly include hydraulic tilt cylinders, hydraulic steering cylinders, and hydraulic lift cylinders. We have various types of fully automatic CNC production 300 sets of equipment, and automatic hydraulic cylinder assembly equipment. Our design capacity is 200,000 sets. In addition to these products, we also supply aerial work platform cylinders, industrial vehicle hydraulic cylinders, rotary drilling cylinders, mobile crane cylinders, construction machinery hydraulic cylinders, forklift hydraulic cylinders, mining dump truck cylinders, and sanitation machinery hydraulic cylinders, and welcome customers to customize with drawings or samples.

At EVER-POWER, we are committed to providing customers with high-quality products, preferential prices and considerate services. We strive to make sure that each customer receives the best service and the highest quality product. So, come to EVER-POWER for all your hydraulic cylinder needs!

Take a look at our hydraulic cylinder factory in the video below.