Fluid Power Journal

Why We Need a Global Standard to Measure Shifting Time of a Control Valve

By Mary Dyksterhouse, Lab Manager at Parker Hannifin Pneumatic Division, Nominated by the U.S. Technical Advisory Group to become the next convenor of TC …

ISO 4406: Method for Coding the Level of Contamination by Solid Particles

By Barry Verdegan, Ph.D., Research Fellow, Cummins Filtrations, Inc. and Chair, ISO TC 131/SC 6 It has been estimated, in commonly available literature1, that …

ISO 11727 Port Identification

Dennis Bonacorsi- Chief Engineer (retired)- Numatics, Inc., Prior Member ISO TC 131/SC 5/WG 3 Pneumatic Valves Proper paths are a very important requirement …

History of the ISO 3601 Series of Standards for O-Rings

By Ronald E. Zielinski, President, PolyMod Technologies, Inc., Chairman of the U.S. TAG for TC 131, U.S. Expert and Project Leader to TC 131 SC7, and Christa …

Pneumatic Cylinder ISO Standards

Let’s start with a little background on the ISO committees. ISO TC131 is the committee responsible for fluid power. One of the groups underneath TC131 is …

Benefits of Designing Hydraulic Equipment with Hydraulic Cylinders Per ISO Standards

By Lido Boni, Past Convenor, ISO TC 131/SC3/WG1 Hydraulic Cylinders There are four main ISO standards for mounting dimensions related to hydraulic cylinders. …

Select The Right Hydraulic Component Using Hydraulic Pump & Motor ISO Standards

By Jose M. Garcia Bravo, Ph.D., CFPS The International Standards Organization (ISO) helps hydraulic pump and motor users, manufacturers, and researchers …

Fluid Power Vocabulary ISO 5598

By John F. Berninger, CFPE, past chair of ISO TC 131 (2003-2015) Have you ever had a conversation about pressure in a fluid power system only to realize that …

ISO Standards for Hydraulic Systems and Pneumatic Systems

Jerry Carlin, Past Chair of ISO TC 131/SC9 (2003-2015) Formal standardization of hydraulic and pneumatic systems best practices began in the early 1950s …

Graphical Standard 1219

By Gary Baumgardner, principle engineer at Parker Hannifin Corp., TC 131 chairman We use or are guided by graphical symbols every day of our lives. Stop signs …

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