Fluid Power Journal

Revisions to ISO 11171: A Calibration of Automatic Particle Counters for Hydraulic Fluid Power Liquids

By Barry Verdegan, Ph.D., Research Fellow, Cummins Filtration Inc. and ISO/TC 131/SC 6 chairman Hydraulic fluid cleanliness is critical to the overall …

Two New Fluid Power Standards Published

Standardization development continues in the field of fluid power systems and components. TC 131 – the technical committee directly responsible for fluid …

ISO 4405 (Determination of Particulate Contamination by the Gravimetric Method)

By Sneha Swaminathan, Hollingsworth & Vose, and Susan Goldsmith, IBR Laboratories This update is a technical summary of work done by the ISO 4405 …

What is the Real Size of that Pump?

Revisions to ISO 8624: A standard for determination of the derived capacity of hydraulic pumps and motors By Jose M. Garcia-Bravo, CFPS, and Jason Nicholson …

Revisions Completed for 4-screw Hydraulic Flange Connections Standards ISO 6162/J518

By Robert Mackey, SAE J518 Standard Champion, ISO 6162 US Lead Expert, MAIN Mfg. Products, Inc., info@mainmfg.com The importance of these standards was shown …

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 …

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