Mobile machine designers are often faced with the following dilemma: accommodating quite a large functionality in the smallest possible installation space. Some mobile machines and utility vehicles must comply as well with unambiguous regulations regarding the width or height of the vehicle. The difficulty of this task becomes particularly evident when additional functions are to […]
Progressive versus linear spools in Danfoss PVG mobile proportional valves
Contributed by Buck Schmitt, CFPS, Territory Manager – Eastern PA and Mid-Atlantic, Kraft Fluid Systems When designing hydraulic systems for mobile machinery, there are a variety of requirements that range from basic setup functions to extremely precise maneuvers. Let’s examine the more precise and critical functions. There are several ways to approach hydraulic system challenges. […]
What is a relief valve?
A relief valve is a device used to limit pressure in one or more locations in a hydraulic circuit. A relief valve uses a spool or poppet engaged to the closed position by a spring. A spool is a cylindrical piece of machined steel that slides within a machined body. A poppet is a flat […]
11 industry leaders inducted into the 2019 Fluid Power Hall of Fame
Eleven individuals, six posthumous, have been inducted into the 2019 Fluid Power Hall of Fame. The Inaugural Class of 2019 is hosted this year by the International Fluid Power Society. The honor acknowledges nominated individuals who have dedicated their careers, and have made significant contributions to Fluid Power technology. They include (* indicates a posthumous award): […]
We’ve come a long way, baby: the evolution of construction equipment hydraulics
Modern mobile machinery has changed quite a bit. Here is a look at how construction equipment hydraulics have changed over the last couple hundred years. By Josh Cosford, Contributing Editor On a road near my home, there exists a hand-laid stone fence, perhaps 4 ft high and a hundred times as long. Crafted from locally-sourced […]
FORCE America acquires Mobile Equipment Systems
FORCE America has acquired Mobile Equipment Systems, Tukwila, Wash., a supplier of power-takeoffs, pumps and mobile hydraulic components to the northwestern United States. The acquisition extends FORCE America’s reach into the Pacific Northwest and provides local support for the company’s customers in the region. Financial terms of the acquisition were not disclosed. Mobile Equipment Systems […]
Energy-efficient hydro accumulators for energy storage or conversion
Roth Hydraulics, Biedenkopf, Germany, offers energy-efficient hydro accumulator solutions for systems requiring storage or conversion of hydraulic energy. These fluid technology components are used in mobile hydraulics, energy and power plant systems, industrial hydraulics, machine tools and oil and gas systems. Roth Hydraulics, formerly known as Bolenz & Schäfer, is a company with a long […]
HED appoints Randy Silasiri as VP sales and marketing
Randy Silasiri has joined HED Inc., Hartford, Wis., as its VP Sales & Marketing. He comes to HED from a 12 year career with Danaher/Fortive with global sales responsibilities at several divisions including Danaher Motion, Dover Motion, and Kollmorgen. Previously, he had a 16 year career with Allen-Bradley/Rockwell Automation, with various sales and engineering roles […]
Registration is open for 2019 ICUEE-The Demo Expo
Registration is officially open for 2019 ICUEE-The Demo Expo, set for October 1-3 at the Kentucky Exposition Center in Louisville, Ky. New registration options make it easier than ever to attend and take advantage of ICUEE’s exhibits of the latest utility and construction product innovations. Attendees will also find new education opportunities and the show’s […]
What is the difference between fixed and variable pumps?
For novices in the fluid power industry, lack of understanding between the fixed flow and variable flow pumping concepts is quite common. A hydraulic pump has one mission, and that is to transform incoming mechanical energy at its shaft into hydraulic energy capable of transferring force to actuators somewhere downstream. This transfer of force is […]
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