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ISO6431(ISO15552) Pneumatic cylinder

Date:2025-08-02    Visits:144

Common ISO 15552 pneumatic cylinders include DNC, SE, SI, DNG, SG, DNT CP96 series air cylinders, most of their mounting accessories can be interchangeable. ISO 15552 pneumatic cylinder has stable performance, smooth operation and high output force, needless additional lubricating oil.

For most of ISO 15552 air cylinder, there is a magnetic ring on the piston of cylinder, which is used to be detect气缸合集 cylinders collect.JPGed by reed switch to control the position of pneumatic cylinder movement.

There is a mounting groove on the pneumatic cylinder tube of the ISO pneumatic cylinders, which is very convenient to install reed sensor switches without additional mounting brackets.


ISO Pneumatic cylinder 

Both the earliest 6431 standard and the later 15552 standards are designated air cylinder categories.

 

What is the ISO 15552 standard?

ISO 6431 is the earliest set of Internationally applicable pneumatic cylinder size and performance specifications, simply put, it is an ISO standards dimensions for pneumatic actuators include diameter, stroke, installation dimensions, and interface standards.

 

As the requirements for pneumatic cylinders become increasingly stringent ISO 15552 is an upgrade and expansion of ISO 6431 International Standard, providing a wider universal range of Universal pneumatic cylinder diameters. Range of 32mm~100mm in ISO 6431, the range of ISO 15552 has been increased to 32mm~320mm.

 

For most pneumatic cylinders that comply with the ISO 15552 standard, there is a magnetic ring on the piston that is used to detect the magnetic ring through a magnetic spring switch, thereby controlling the position of the pneumatic cylinder movement.

 

 The pneumatic cylinder barrel of the ISO standard is equipped with installation slots, which facilitate the installation of magnetic spring switches without the need for additional installation brackets. ISO 6431 pneumatic cylinders are widely used in fields such as mechanical manufacturing, automated production lines, and industrial robots.

 

ISO 6431 pneumatic cylinder specifications

According to the ISO 6431 standard, air cylinder diameters typically range from 32mm to 100mm, with a flexible selection of maximum stroke length. The standard also specifies the dimensions of the air cylinder end cap, piston rod, and air interface position to ensure the ease and reliability of cylinder installation. Its structural design balances durability and lightweight, making it suitable for various industrial environments.

 

ISO 6431 pneumatic cylinder dimensions chart

The ISO 6431 has a unique size chart that can help engineers quickly select and design installation plans for the pneumatic cylinder. The typical size table includes key parameters such as pneumatic cylinder diameter, pneumatic cylinder body length, installation hole spacing, and piston rod diameter. Through these standard dimensions, customers can easily verify whether the equipment space and performance requirements are met.

 

The following is the timeline of the development and evolution of the ISO 6431 standard.

 

What Is the Relationship Between ISO 15552 And ISO 6431?

ISO 6431 is the earliest pneumatic cylinder brand in 1983. Then it was revised in 1992. In 2004, ISO 6431 was withdrawn and replaced by ISO 15552. The latest version is ISO15552. 

Now all manufacturers basically use pneumatic cylinders iso 15552 to replace the original ISO 6431 standard. But some factories and users are still using the ISO 6431 pneumatic cylinder standard. Essentially, they are not much different. It's just that ISO 15552 is more complete in detail than ISO 6431. 

 

ISO 6431 Pneumatic cylinder Working principle and installation

ISO 6431 pneumatic cylinder working principle

Pneumatic cylinder ISO 6431 that use compressed air to propel the piston back and forth. When air enters one end of the pneumatic cylinder, it pushes the piston rod to extend, and when the air is released, the piston rod retracts. The pneumatic cylinder has a simple structure, rapid response, and is suitable for high-speed and frequent mechanical actions.

 

Regardless of the brand, the working principle of all pneumatic cylinders is exactly the same. Browse this article to learn more about how air cylinders operate as actuators.

 

ISO 6431 pneumatic cylinder mounting types

ISO 6431 pneumatic cylinder support multiple installation methods, such as flange installation, threaded installation, side brackets, etc. Different installation methods meet the needs of different mechanical structures, ensuring the stability and reliability of the pneumatic cylinder during operation. Choosing the appropriate installation method can also reduce equipment vibration and extend pneumatic cylinder life.

 

ISO 6431 pneumatic cylinder installation 

ISO pneumatic cylinders have greater advantages compare others in installation due to its standardized designstrong interchangeability, ease of installation, and good compatibility.

 

 

 

6431 Pneumatic cylinder Parameter

 

◆ Working pressure: 0.1~1.0MPa

◆ Ambient temperature: -20~80℃

◆ Applicable fluid medium: Compressed air, non-corrosive gas

◆ Operating speed: 30-800mm/s

◆ Applicable reed switch types: CS1-M, CS1-U series, etc.

 

 

ISO pneumatic cylinder Selection and Application

 

Autoair can provide ISO 6431 and 15552 standard pneumatic cylinders, and choose the appropriate pneumatic cylinder based on the specific application.

How to select ISO 6431 pneumatic cylinder

Although Airtac Standard pneumatic cylinders also offer many pneumatic actuators with ISO standards, and this brand places more emphasis on cost-effectiveness, but it is also necessary to consider the actual working conditions, load size, and motion speed comprehensively, and determine the pneumatic cylinder diameter and stroke. The pneumatic cylinder diameter determines the output force, and the stroke meets the working distance. Suitable installation methods and sealing materials need to be selected based on the installation space and working environment. Professional selection can significantly improve equipment efficiency and service life. Compared to the standard ISO 6431, the DNC series ISO 6431 air cylinder has a compact structure, magnetic switch slots, lower load capacity, and mostly short to medium stroke, making it suitable for applications in small automation equipment and assembly lines.

 

How to select ISO 15552 pneumatic cylinder

As an upgraded version of 6431, the 15552 pneumatic cylinders have a wider cylinder diameter and stronger performance, both of which belong to the structural design with piston rods. Compared with the DNG series ISO 15552 pneumatic cylinder, the SI series ISO 15552 pneumatic cylinder has lower load and is suitable for heavy-duty assembly lines, robot arms, and packaging machinery; The DNG series ISO 15552 pneumatic cylinder has a more flexible piston rod, stronger load capacity, and is suitable for chemical equipment, heavy industrial machinery, and harsh working conditions applications. Both types of ISO 15552 pneumatic cylinders belong to the long stroke category.

 

ISO 15552 air Cylinder

15552 is an upgrade and extension of the international standard 6431, mainly applicable to cylinders with piston rods.6431 pneumatic cylinders have a more compact structure and lower pressure resistance than ISO 15552 air cylinders, making them more suitable for situations with limited space. ISO 15552 pneumatic cylinders are commonly used for heavy-duty and long stroke applications, with stronger sealing performance. The following is an introduction to the characteristics and applications of ISO 15552 pneumatic cylinder:

 

ISO 15552 Pneumatic cylinder Characteristics:

◆ ISO 15552 standard pneumatic cylinder adopts double Y-ring sealing structure, reliable sealing

◆ High output force, low starting pressure

◆ The front and rear covers are equipped with air cushioning, which is convenient to adjust the moving speed of ISO 6431 pneumatic cylinder

◆ Interchangeable with all ISO 15552, ISO 6431 standard pneumatic cylinders in installation and use.

 

Compared to high-frequency, long-lifespan SMC ISO pneumatic cylinders, ISO 15552 pneumatic cylinders offer better cost control, structural interchangeability, and faster delivery;Compared to ISO 6432 pneumatic cylinders, ISO 15552 pneumatic cylinders adopt square profile or pull rod structure pneumatic cylinder tube which offer larger bore sizes and a more robust and durable structure.

 

Applications of ISO 15552 standard pneumatic cylinder 

 

The ISO 15552 Pneumatic cylinder is widely applied across various industries and fields, especially in environments requiring efficient, reliable, and durable pneumatic actuators. Here are some typical application areas:

 ◆ Automation Production Lines

In automation, the ISO 15552 Pneumatic cylinder is commonly used in robotic arms, assembly systems, and handling devices. Its standardized design ensures compatibility with various automation equipment, enhancing production efficiency.

◆ Automotive Manufacturing

In automotive production, the ISO Pneumatic cylinder is employed in body assembly, painting, and inspection operations. These pneumatic cylinders offer long service life and durability, meeting the high demands of the automotive industry.

◆ Mining and Heavy Machinery

Due to its excellent performance and ability to withstand high pressures, the ISO Pneumatic cylinder is frequently used in mining machinery, heavy equipment, and other industrial environments with demanding requirements.

 

Autoair have many ISO15552/ISO6431 standard pneumatic cylinder, If you need it, please freely to contact us.


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