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What is the piston of a cylinder?

The piston of the hydraulic cylinder is one of the core components inside the hydraulic cylinder. Its main function is to convert hydraulic energy into mechanical energy and push the piston rod to achieve reciprocating linear motion. The effective working area of the piston directly affects the output force and movement speed of the hydraulic cylinder.

How do I know if my piston needs replacing?

As Qingdao Micro Precision Machinery Co., Ltd., we suggest evaluating the necessity of replacing the hydraulic cylinder piston based on the following aspects.:

(1) Check the sealing performance of the hydraulic cylinder

No-load detection: Under no-load conditions, the minimum "starting pressure" of the hydraulic cylinder should meet the standard. If the pressure is too low (less than 0.7MPa), it means that the pressing force between the seal and the cylinder or piston rod is insufficient; if the pressure is too high (greater than 1.4MPa), it may be that the seal is compressed too much, resulting in increased friction resistance.

(2) Check the wear of the piston

Piston seal: Focus on checking whether there are scratches or wear on the lip of the piston seal. If the seal is severely worn, it may cause leakage in the hydraulic cylinder and the seal needs to be replaced.

Piston surface: Check whether there are scratches, strains or corrosion on the piston surface. If the piston surface is severely damaged, it may affect the sealing performance and movement stability.

(3) Observe the operating status of the hydraulic cylinder

Motion stability: If the piston rod creeps, shakes or has uneven speed when it is extended and retracted, it may be caused by wear on the inner wall of the piston or cylinder.

Pressure fluctuation: When running without load, the pointer of the oil pressure gauge fluctuates rhythmically, which may indicate that the inner diameter of the cylinder is uneven, and further inspection of the matching of the piston and cylinder is required.

(4) Regular maintenance and inspection

Appearance inspection: Regularly check the appearance of the hydraulic cylinder and observe whether the cylinder body and piston rod are defective or damaged.

How much does it cost to replace a piston?

The cost of replacing a hydraulic cylinder piston varies based on numerous factors, including:

(1) The cost of the piston itself

The price of a hydraulic cylinder piston will vary depending on its size, material, and precision requirements. Generally speaking, the price of a hydraulic cylinder piston of ordinary specifications may range from a few hundred yuan to several thousand yuan. If a piston with high precision or special materials needs to be customized, the cost will be higher.

(2) Management cost

The labor cost of replacing a piston depends on the complexity of the hydraulic cylinder and the maintenance environment. Usually, replacing a piston requires professional technicians to operate, and the labor cost may range from a few hundred yuan to thousands of yuan.

(3) Other parts replacement

When replacing a piston, it may also be necessary to replace other related parts such as seals and guide sleeves. The cost of these parts will also vary depending on the specific model and brand.

Qingdao Micro Precision Machinery Co. is ready to offer top-quality  Cylinder Piston to customers worldwide.

For 24 hours contact details as below:

Email: cyndee@wghydrauliccylinder.com    

       sales@wghydrauliccylinder.com

Mobile/WhatsApp/Wechat: 0086-13793230712