ISO 6432:2015

Overview

ISO 6432:2015 defines the basic and mounting dimensions for pneumatic fluid power single rod cylinders, specifically designed for a maximum working pressure of 1 000 kPa (10 bar) and bore sizes ranging from 8 mm to 25 mm. This international standard, developed by the International Organization for Standardization (ISO), ensures the interchangeability of pneumatic cylinders used in industrial automation, manufacturing, and fluid power systems. It provides uniform dimensional guidelines while allowing manufacturers the flexibility to innovate within the established framework.

Key Topics

• Scope and Purpose
  • Establishes a metric series of mounting dimensions for pneumatic cylinders
  • Facilitates interchangeability across manufacturers and equipment
  • Applies to single rod cylinders for use in pneumatic fluid power systems, up to 1 000 kPa (10 bar)
• Bore Sizes
  • Covers cylinders with bore sizes: 8 mm, 10 mm, 12 mm, 16 mm, 20 mm, and 25 mm
• Mounting Types
  • Recognizes mounting styles from ISO 6099:
    • Head threaded mounting (MR3)
    • Cap fixed eye mounting (MP3)
    • Head angle mounting (MS3)
    • Head rectangular flange (MF8)
• Tolerance Guidelines
  • Includes dimension tolerances for strokes up to and including 100 mm
  • Longer strokes subject to national standards or manufacturer-user agreements
• Piston Rod Characteristics
  • Specifies both shouldered and unshouldered male thread designs
  • Refer to ISO 4395 for detailed piston rod thread dimensions
• Nominal Stroke Selection
  • References ISO 4393 for nominal stroke values and tolerance determination

Applications

ISO 6432:2015 is essential in sectors where pneumatic cylinders are widely used, including:

• Industrial Automation
  • Ensures consistent integration and replacement of cylinders in assembly lines
• Manufacturing Equipment
  • Enables compatibility and interoperability across various equipment brands and models
• Machine Tooling
  • Provides reliable dimensional data for the design and maintenance of machine tools utilizing pneumatic actuators
• Process Control Systems
  • Simplifies specification and procurement of single rod cylinders for operations requiring controlled linear motion

The standardized dimensions allow engineers to choose pneumatic cylinders with confidence that products from different suppliers will be physically compatible and fit established mounting footprints. Additionally, designers can readily specify components without concern for custom adapters or fittings, reducing installation time and cost.

Related Standards

To ensure full compliance and optimal integration, consider the following related ISO standards:

• ISO 3320 - Cylinder bores and piston rod diameters and area ratios - Metric series
• ISO 4393 - Basic series of piston strokes for cylinders in fluid power systems
• ISO 4395 - Cylinder piston rod end types and dimensions
• ISO 5598 - Vocabulary for fluid power systems
• ISO 6099 - Identification codes for cylinder mounting dimensions and types
• ISO 16030 - Ports and stud ends for pneumatic fluid power connections
• ISO 6430 - Single rod cylinders with integral mountings, larger bores (32 mm to 250 mm)
• ISO 15524, ISO 15552, ISO 21287 - Standards covering short-stroke, detachable, and compact pneumatic cylinders

Adhering to ISO 6432:2015 improves component interchangeability, system reliability, and overall design efficiency in pneumatic applications. Manufacturers, system integrators, and maintenance personnel benefit from standardized solutions that promote safety, quality, and operational excellence in fluid power systems.