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What is BS EN ISO 6431:2016

The BS EN ISO 6431:2016 is an international standard that specifies the requirements for pneumatic cylinders used in industrial applications. This standard was developed by the International Organization for Standardization (ISO) and adopted by the British Standards Institution (BSI). In this article, we will examine the key aspects of this standard and how it impacts the design, manufacturing, and usage of pneumatic cylinders.

The Scope of BS EN ISO 6431:2016

The scope of the BS EN ISO 6431:2016 standard encompasses various aspects of pneumatic cylinders, including their dimensions, performance requirements, and testing procedures. It applies to both single-acting and double-acting cylinders, with or without additional functions. The standard sets forth the requirements for cylinder bores ranging from 16 mm to 320 mm, which covers a wide range of industrial applications.

Design and Manufacturing Considerations

One of the primary goals of the BS EN ISO 6431:2016 standard is to ensure the interchangeability and compatibility of pneumatic cylinders across different manufacturers. To achieve this, the standard provides detailed guidelines on dimensional tolerances, mounting interfaces, and mounting options. Additionally, it specifies the materials and surface treatments that should be used to enhance the longevity and performance of the cylinders.

Manufacturers are also required to adhere to specific performance requirements outlined in the standard. These include parameters such as maximum operating pressure, cushioning characteristics, dynamic behavior, and leakage rates. By complying with these requirements, manufacturers can ensure that their cylinders meet the necessary performance standards for safe and reliable operation in industrial environments.

Testing and Compliance

To verify compliance with the BS EN ISO 6431:2016 standard, various tests need to be conducted on pneumatic cylinders. These tests evaluate parameters such as dimensional accuracy, pressure resistance, sealing effectiveness, and durability. The standard provides clear guidelines on how these tests should be performed and the acceptable limits for different performance parameters.

Compliance with this standard is crucial for manufacturers as it ensures that their products meet the necessary quality standards. It also provides end-users with the confidence that the pneumatic cylinders they purchase will perform reliably and safely in their respective applications.


The BS EN ISO 6431:2016 standard plays a critical role in establishing the requirements for pneumatic cylinders used in industrial applications. By adhering to this standard, manufacturers can ensure the interchangeability, compatibility, and performance of their products. End-users can benefit from reliable and safe operation, backed by rigorous testing procedures outlined in the standard. Ultimately, the BS EN ISO 6431:2016 standard contributes to the overall efficiency and effectiveness of pneumatic systems in various industries.


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