ISO 6431

Emerson's ISO 6431 Standard for Pneumatic Cylinders provides a thorough and systematic framework for defining a metric series of mounting dimensions, establishing a vital foundation for the seamless integration of pneumatic cylinders across various applications. This comprehensive standard addresses key elements, including fundamental dimensions, nominal stroke and tolerances, bore sizes, mounting styles, and piston rod characteristics.

RPC Series

The RPC Series Round Pneumatic Cylinders are renowned for their efficient and reliable performance in various industrial applications. These cylinders, featuring a compact and durable design, offer precise motion control and are easily integrated into a range of automation systems. Ideal for both light and heavy-duty tasks, they boast a seamless operation with minimal maintenance requirements. With their adaptability and consistent quality, the RPC Series is a top choice for professionals seeking effective pneumatic solutions.

Version: Mini Type
Working Pressure Range: 1 - 10 Bar
Temperature Range: -20°C to 80°C
Maximum Particle Size: 50 µm
Piston Force Pressure: 6.3 Bar
Materials: Stainless Steel, Aluminium (Anodised), Polyurethane, & Steel (Galvanised)
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167 Series

Introducing the AVENTICS™ Series 167 Tie-rod cylinder, available in diameters ranging from Ø 25 mm to 100 mm and boasting a maximum stroke of 1500 mm. This versatile cylinder is designed for high stroke frequencies and excels in pulley applications. Its user-friendly design features a convenient plug-in with a tube nut or external thread option, making installation a breeze. Experience reliability and efficiency with AVENTICS™ Series 167 Tie-rod cylinder, your solution for demanding industrial needs.

Standards: ISO 6431
Working Pressure Range: 2 - 10 Bar
Temperature Range: -20°C to 75°C
Maximum Particle Size: 50 µm
Piston Force Pressure: 6 Bar
Materials: Aluminium (Anodised), Stainless Steel (Chrome Plated), & Acrylonitrile Butadiene Rubber
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General Information

ISO 6431 Pneumatic Cylinder Overview

ISO 6431 Pneumatic Cylinders are standardised actuators originally developed as a European norm to define the mounting and dimensional guidelines for profile cylinders with tie rods. Although ISO 15552 has now replaced ISO 6431 as the current version, ISO 6431 is still widely recognised and used, particularly in legacy systems.

These cylinders are typically used in industrial automation, heavy-duty machinery, packaging lines, and more, where reliable actuation and high performance are essential. With bore sizes from 32 mm to 320 mm, they deliver consistent force and smooth motion across a wide variety of applications.

ISO 6431 ensures dimensional interchangeability, meaning you can replace or upgrade cylinders from different manufacturers without reconfiguring your system. While many systems now default to ISO 15552, ISO 6431 cylinders remain a cost-effective, dependable solution for a wide range of tasks.

FAQ'S

1. What is an ISO 6431 pneumatic cylinder?
An ISO 6431 pneumatic cylinder is a standardised actuator designed according to European norms for tie-rod and profile-style cylinders. It allows for consistent mounting and sizing, ensuring interchangeability between manufacturers. ISO 6431 is the predecessor to ISO 15552.

2. How does ISO 6431 differ from ISO 15552?
ISO 15552 is the updated version of ISO 6431, featuring tighter dimensional tolerances and improved specifications. However, it remains largely backward compatible with ISO 6431, meaning both cylinder types can often be swapped with minimal adjustments.

3. What applications are ISO 6431 cylinders used in?
They are widely used in industrial automation, machine tooling, packaging systems, and general manufacturing—anywhere reliable, repetitive motion is required in medium to heavy-duty environments.

4. What size ranges do ISO 6431 cylinders cover?
ISO 6431 cylinders are available in bore sizes from 32 mm to 320 mm, with various stroke lengths depending on the application. This makes them versatile for delivering different force outputs.

5. Are ISO 6431 cylinders still used today?
Yes. Despite ISO 15552 being the current standard, ISO 6431 cylinders are still commonly used in existing installations, especially in older equipment. Many manufacturers continue to support both standards for compatibility and replacement needs.

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Pneumatic ISO 6431 Standard Cylinders