A new ISO Standard has recently been published and is now available from the National Fluid Power Association (NFPA).
ISO 3320:2013 (supersedes ISO 3320:1987 and ISO 7181:1991) Fluid power systems and components – Cylinder bores and piston rod diameters and area ratios – Metric series (third edition)
ISO 3320:2013 establishes a metric series of cylinder bores and piston rod diameters for hydraulic and pneumatic cylinders and specifies for each pair of diameters a corresponding standard ratio between the useful areas. ISO 3320 helps manufacturers and users of cylinders by providing a globally-agreed series of these dimensions and area ratios from which to select.
NFPA list price:
NFPA member price:
NFPA provides a forum for the fluid power industry’s channel partners—manufacturers, suppliers, distributors, customers and educators. Its U.S. and multinational members work cooperatively in advancing hydraulic and pneumatic technology through the association’s many programs and initiatives. NFPA coordinates standards development for fluid power at the industry and international levels. These standards are intended as guides to aid the manufacturer, the consumer, and the user.
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