A reciprocating compressor cylinder liner, also known simply as a compressor liner or cylinder sleeve, is a cylindrical component that lines the inner wall of the compressor cylinder.
Compressor Cylinder Liner
Compressor Cylinder Liner
Compressor Cylinder Liner

Reciprocating Compressor Cylinder Liner

DescriptionFunctions
A reciprocating compressor cylinder liner is a removable part of a compressor cylinder that provides a smooth surface for the piston’s reciprocating motion. Liners are also known as sleeves. They can be used to form the cylinder wall or to replace a worn part. Liners can be a cheaper alternative to a replacement cylinder body, and they can be made of suitable wear material, such as gray iron. Liners also allow the cylinder bore diameter to be changed easily.
Wear Resistance: The liner provides a wear-resistant surface against which the piston moves. Reciprocating motion can cause friction and wear between the piston rings and the cylinder wall. The liner helps to reduce this wear and extend the lifespan of the compressor.

Sealing: The liner helps to create a seal between the piston rings and the cylinder wall. This seal is crucial for maintaining compression efficiency and preventing gas leakage during the compression process.

Heat Dissipation: During compression, gas temperature increases, which can lead to thermal expansion of the cylinder wall. The liner helps to dissipate heat away from the cylinder wall, preventing excessive expansion and maintaining dimensional stability.

Corrosion Resistance: Liners are often made from materials that are resistant to corrosion, ensuring the longevity of the compressor in harsh operating environments.

Ease of Maintenance: In the event of wear or damage, liners can be replaced more easily and cost-effectively than replacing the entire cylinder. This makes maintenance and repair of reciprocating compressors more manageable.

Liners are typically made from materials such as cast iron, alloy steel, or various composite materials, depending on the specific requirements of the compressor application. They are designed to withstand the pressures, temperatures, and mechanical stresses encountered during compressor operation. Proper selection and maintenance of cylinder liners are essential for optimizing the performance and reliability of reciprocating compressors.


Compressor cylinders are frequently supplied with liners to reduce reconditioning costs. Liners are pressed or shrunk in place to ensure that they do not slip. Replacement of a cylinder liner is much less expensive than replacing an entire cylinder. In addition, performance can be adjusted to new requirements by changing the inside diameter of the liner. However, cylinder liners increase the clearance between the valve and the piston, diminish the effectiveness of jacket cooling, and decrease compressor capacity from a given diameter.

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