How does the air spring work?

Air spring provides direct support for safe lifting, positioning, reducing and balancing weight. They have multi-function of various forces, simple installation, compact size, speed control damping, buffer end movement, and flat force curve.
The most popular use is as a support for horizontal hinged doors. However, due to their versatility and ease of use, they are also used in many other applications in the transport and office equipment, off-road vehicles, medical and leisure equipment industries.
The weight of the support can range from several kilograms to half a ton - or from 50 to 5000 Newtons (two springs). The air spring adopts mature engineering technology and has been tested thousands of times to ensure that it meets the requirements of customers.
Gas spring is a kind of sealed energy, which contains pressurized inert gas and a small amount of oil. As separate units, they do not require power or maintenance. With its strong, solid structure and high structural integrity, they provide years of trouble-free operation.
The gas spring works by forcing inert gas (nitrogen) into the cylinder under pressure. Then the internal pressure is much higher than the atmospheric pressure. This pressure difference exists in the position of the rod and generates an outward force on the rod, which extends the air spring.
This is because: force = pressure x area < br > when the rod is compressed into the cylinder, the internal pressure and output force increase according to the displacement volume of the rod. When stretching or compressing, gas passes through a small hole from one side of the piston to the other. This can be accurately measured to control elongation, compression or both.
Oil damping occurs at the end of the stretch due to the hydraulic buffer zone. These functions help protect the hinges and brackets by applying a constant force at the end of the damping stroke.
Control the flow rate of nitrogen and hydraulic oil while extending to maintain controlled elongation. When compressed, the velocity of flow increases to facilitate movement. The gas spring also contains a limited amount of oil to lubricate seals, pistons and piston rods.
When the rod is compressed or stretched, the gas and oil in the cylinder move from one side of the piston to the other side, resulting in damping effect, reducing sudden impact in installation, hinge and application.

Back to technical support