Accumulators

Piston accumulators are perhaps the most overlooked of their ilk, often standing out of the spotlight in which diaphragm and bladder accumulators bask. In fact, piston accumulators are superior to other types in more ways than they are inferior, so this article aims to set the record straight on why you should (or shouldn’t) select…

Bladder accumulators are an industry-standard choice, as commonly available as D03 valves or NFPA-style hydraulic cylinders. Your outside sales team is always happy to see them in a factory, because everyone offers an option to either repair or replace them. The big names all make them (or bought companies that make them), but there are…

Earlier this year, Robin Hodgson was tasked with fully bringing SFP Hydraulics into the Roth Hydraulics’ fold. When Robin Hodgson left high school in the UK, he had a few options: continue onto the higher education route, leave for a Government Student Employee Scheme, obtain an apprenticeship, or drop out of school. He chose the…

A hydraulic accumulator originally developed for the automotive industry is opening up new possibilities for agricultural machinery operating under extreme conditions. Freudenberg Sealing Technologies has successfully transferred proven passenger car technology to a demanding new application. What began as a solution for passenger car transmissions is now demonstrating its strengths in agricultural equipment. Freudenberg Sealing […]

Roth Hydraulics has significantly expanded its capacity for the internal machining of piston accumulators. Thanks to the comprehensive modification of an existing honing machine, the company can now machine cylinder tubes with a length of up to 10 m and a diameter of up to 560 mm internally. Previously, the maximum workpiece length was 5…

By Josh Cosford, Contributing Editor When someone mentions a high-pressure hydraulic pump, the vane pump is not likely to come to mind. Vane pumps are often limited to 2,000 psi or less because of the physical limitations of their inherent design. Vanes must reciprocate inside slots while pushing on the cam ring, and when fully […]

Bosch Rexroth and HydraForce announced that the full range of Bosch Rexroth compact hydraulic products is now available at HydraForce.com. The integration combines the strengths of two world-class leaders in compact hydraulic solutions to deliver the industry’s broadest line of high-quality hydraulic control solutions to OEMs around the globe. “By incorporating the full range of […]

By Josh Cosford, Contributing Editor The automotive industry is leaving no stone unturned as it explores every possible technology and advancement that can improve performance while reducing CO2 emissions. Hybrid and electric vehicles have been employing regenerative braking systems that recapture kinetic energy through a motor generator rather than convert the vehicle’s inertia into heat, […]

Roth Hydraulics is driving forward its internationalization and strengthening its global market position. The manufacturer of hydraulic accumulator systems from Biedenkopf-Eckelshausen has acquired the US company SFP Hydraulics Inc. in Houston. SFP Hydraulics is an established supplier of bladder, piston and diaphragm accumulators. The company was founded in 2014 and has grown strongly since then.…

Roth Industries announces that it is making leadership changes to the company’s executive team. Christin Roth-Jäger succeeds Matthias Donges as CEO of Roth Industries, who is retiring at the end of the year after 22 years of service. Roth-Jäger, was previously COO (Chief Operating Officer) of Roth Industries and Managing Director of Roth Werke GmbH. “In…

Galland Henning Nopak, a manufacturer of hydraulic and pneumatic solutions, custom-designed cylinders, accumulators, and valves, has added an online catalog and CAD model configurator to their site. Built by CADENAS PARTsolutions, the new features include Nopak’s most popular fluid power solutions. The e-catalog and configurator will simplify the design and specification process for engineers by…

Pitch controls and pitch drives in wind turbines are used to reliably adjust the blade angle to the wind. They also guarantee the best possible energy yield from wind power and must work reliably over the entire service life of the plant. Current development trends show a continuous increase in pitch activity. At the same…

By Josh Cosford, Contributing Editor Hydropneumatic accumulators combine the power density of hydraulics with the compressibility (and expandability) of air. The accumulator itself uses either bladders, diaphragms or pistons to separate the gas side from the hydraulic side. The air side is pre-charged with nitrogen gas to a pressure appropriate for the application. Nitrogen is…

Parker Hannifin has introduced a new safety block (SB series) for hydraulic accumulators that simplifies the selection, installation and maintenance process of these important system components. Due to the broad variety of accumulator types and their applications, the market is proliferated with an equally wide expanse of safety blocks that, until now, has made selection…

With the Carat 840 and the Carat 920, Bühler from Uzwil is further expanding its range of die casting solutions, in response to the increasing demand from the automotive industry for machines to produce ever larger components. These die cast machines are the most powerful of their kind in the world, featuring critical fluid power…

By Josh Cosford, Contributing Editor Accumulators wear out just like all components used in hydraulic machinery. And just like most other components, proper maintenance lengthens the lifespan of accumulators. Some accumulator designs are not repairable, like most diaphragm types, but maintenance will extend useful life especially in repairable bladder and piston versions. There is no…

For precise load handling in maritime applications, Seaqualize in the Netherlands develops custom-fit solutions. The company is currently working on the Delta600 prototype — an accessory to turn standard heavy lift cranes into Active Heave Compensated (AHC) machines for use on the world’s oceans. This is the world’s first inline AHC tool for in-air lifting…

To compliment its lines of hydraulic cylinders, hydraulic power units and gas cylinders Liebherr has created a series-production range for piston accumulators. The series stands out due to modern and economical production processes, but also because of a low-maintenance and compact design. They are available in a range of piston diameters from 100 to 360…

For more than 85 years, rupture disks have served as an effective passive safety mechanism to protect against overpressure or potentially damaging vacuum conditions. The disk, which is a one-time-use membrane typically made of metal, is designed to activate within milliseconds when it experiences a predetermined differential pressure. They can be used as standalone devices…

Eliminating downtime and ensuring safety in mining — two benefits hydraulics provides consistently. By Josh Cosford, Contributing Editor More than almost any other industry appropriating fluid power, mining is where safety sits front and center from design to execution. Surface mining enjoys bragging rights to some of the most massive machines ever manufactured by humans. […]

GPM Controls LLC, the manufacturer of Schrupp bladder accumulators and the US distributor for Roth piston and FOX diaphragm accumulators, has solved the housekeeping problem that plagues many systems with accumulators. A simple decal for recording the intended gas pre-charge and information about the subsequent pre-charge checking and filling, will help provide a more efficient…

Fluid Energy Controls (FEC), City of Industry, Calif. is proud to announce that after 25 years with FEC, the current CEO, Viren Patel has acquired the company. Patel was the first employee and co-founder of Fluid Energy Controls since its establishment in 1995. He initiated and developed the dedicated infrastructure for the international distribution business.…

Moog has launched its new Modular Die Cushion System to extend the life of deep-drawing dies, improve system reliability and reduce commissioning time for manufacturers. Moog`s new Modular Die Cushion System includes a main cylinder (number 4 on the above illustration) with integrated position measuring technology, accumulators, a hydraulic power unit and a number of…

There were significant challenges when Roth Hydraulics needed to design and install a large new blow molding plant for plastic products at its production site in Watertown, New York. The project connected the manufacturer’s skills in two fields — hydraulics and plastics processing. The design of the new hydraulic accumulator system now permits high-speed production,…

Hydraulic accumulators are pressure vessels that store and discharge energy in the form of pressurized fluid. In essence, potential energy is stored in a compressed gas and released on demand to force oil from the accumulator and into the circuit. Here are some important benefits accumulators provide, and how they make hydraulic systems better. Energy […]