Edge-welded metal bellows accumulators are at the cutting edge of hydro-pneumatic accumulator technology, according to Peter Kloft and Daniel Rau, research and development engineers with HYDAC Technology in Sulzbach/Saar, Germany. Compared with other designs such as diaphragm, bladder and piston accumulators, the gas chamber in metal-bellows units is usually hermetically sealed and the metallic barrier […]
Ross Controls expands into hydraulics with hydraulic safety valve system
Ross Controls introduces its new Hydraulic Block & Bleed valve systems designed for external monitoring, up to Category-4, PL e for safety applications. Ross, who is already known throughout the industry for reliable pneumatic safety-related valves and solutions, now expands upon these strengths to offer solutions for users of hydraulic systems. The Ross Hydraulic Block & Bleed […]
How do I specify standard hydraulic manifolds?
By Josh Cosford, Contributing Editor The three most common ways to control hydraulic actuators are with lever valves, cartridge valves or sandwich valves. Lever valves are available as monoblock or stacked valves, and are primarily for directional control. Cartridge valves have nearly infinite possible combinations, but must be used with bodies or custom manifolds. Sandwich […]
Customization enhances pressure switch functionality
Pressure switches are often considered commodity items. But for many mission-critical or demanding applications, including high-pressure hydraulics, aerospace, pharmaceuticals and more, a switch may require a custom mechanical design or electrical features that go beyond what commercial off-the-shelf switches can offer. In fact, with a little extra engineering, users can boost a switch’s performance and, […]
Shift in Motion: An innovative propulsion system for mobile machines
Manufacturers and operators of today’s mobile equipment often want a machine that does double duty: provides high tractive effort in the working mode and high maximum velocities when operating in the transport mode. These drivetrain requirements can be met through a wide array of traditional technological concepts, ranging from simple manual transmissions (shifted at standstill) […]
Modular load-sensing sectional mobile valve from Eaton offers flexible design
Power management company Eaton has announced the newest addition to its line of load-sensing sectional mobile valves, the CLS 180. Featuring a highly modular design, the flexible valve helps designers improve machine performance in a variety of mobile equipment for the construction, refuse, agriculture and marine markets. Eaton’s new CLS 180 load-sensing sectional mobile valve […]
New-generation valve actuation
Proportional hydraulic valves are key components in mobile agricultural and construction machines, as they control motion for a wide variety of functions via cylinders and hydraulic motors. Electrohydraulic actuation is often used to control valve main-spool movement. For lower flows two solenoids can directly actuate the spool, but such arrangements result in high hysteresis and […]
Hall-effect transducers ensure correct axle width to match crop row spacing
When the planting season begins, farmers will plant different crops at different row widths, requiring the sprayers to match the row width by running wheels between the plants and not over them. In the past, changing the axle width was a time-consuming task, as users would have to jack up one wheel of a tractor/sprayer, […]
Custom hydraulic cylinders
Wide variety of custom cylinders are manufactured, including single stage cylinders (both single and double acting), single and double acting telescopic (small and large bore), double end cylinders, piggyback design, mill type cylinders, tie rod cylinders, accumulators, marine grade steering cylinders (WWC product line), and standard dimension welded product lines (WSC and WBC). There is […]
Load-holding valves ensure safety in mobile equipment
Load holding valves from Valvole America are available in a very wide range of cartridges or assembled into valve blocks. They secure the last commanded position of an actuator by preventing fluid from escaping work chambers, with “zero” leakage. They ensure low leakage when closed, with less than 5 drops/min when the valve closed with […]
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