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Customized motors increase speed by 40%
When a potash mine needed to increase machine travel speed, specifying a pair of customized axial-piston motors made it happen. Work output in a potash mine requires machines with high mobility and...
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Beauty isn’t just skin deep
Unless you build hydraulic test stands, you probably rarely see bright, shiny new ones. But you’ll find just that in Fountain Inn, S. C. As part of the grand opening for its new hydraulics campus in...
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PTO with vane pump
Alexis Coffey PTO and vane pump combination based on the Parker T6C family. Interchangeable vane cartridges provide flow rates from 3.4 gpm (12.9 lpm) to 31.7 gpm (119.9 lpm) at 1200 rpm and pressure...
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Axial-piston pumps
Alexis Coffey Compact and quiet A11VO Series 40 axial-piston pumps are offered in five sizes with displacements ranging from 110 to 280 cc. Open-circuit pressure capacities are 350 bar nominal, 420...
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Pinpoint power-loss problems
By using the power-lost method combined with histograms, engineers can generate a clearer picture of troublesome power-efficiency areas in pumps, motors, and cylinders. Fluid power technology...
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Mashed potatoes not an option
Bill Wesmann An all-hydraulic version of an airhead-type harvester enhances the performance, and productivity of potato harvesting. Potatoes are harvested by digging them up and separating them from...
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Turn down the volume of hydraulics
Christian Bohmcker, Mark Latzel, and Dietmar Schwuchow Proprietary tooth geometry reduces noise in external gear pumps. The Silence Plus offers numerous advantages in practice and can reduce system...
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Hydraulic motor helps supply electrical power
The small size of hydraulic motors makes then ideal for powering generators for mobile equipment. Electric power from hydraulics? read more
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Think First, Then Troubleshoot — Chapter 7
When a hydraulic system has problems, it is common practice to first look at the pump. The pump is arguably the heart of almost every hydraulic system and, as such, has traditionally been blamed for...
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Think First, Then Troubleshoot — Chapter 8
When a hydraulic system has problems, it is common practice to first look at the pump. The pump is arguably the heart of almost every hydraulic system and, as such, has traditionally been blamed for...
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New Gear Pump Design Keeps Compactor Quiet
Edited by Alan L. Hitchcox, Editor A quiet external gear pump protects the operator and the surroundings. Along with increased industrialization and automation comes greater noise load both on...
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High-pressure gear pumps and motors are quiet and efficient
The AP/APM212 gear pumps and motors offer high operating pressres, volumetric and mechanical efficiency, minimal noise, reduced vibration, and low flow pulsation. The Series features 4.4 to 27.1...
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Think First, Then Troubleshoot — Chapter 9
When a hydraulic system has problems, it is common practice to first look at the pump. The pump is arguably the heart of almost every hydraulic system and, as such, has traditionally been blamed for...
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Think First, Then Troubleshoot — Chapter 10: Sequence Valves
Sequence valves control fluid flow to primary and secondary circuits and perform two functions. First, they program the order (sequence) in which certain actions take place. Second, they maintain a...
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Pump-controlled steering system shows high efficiency
Researchers at Purdue University, West Lafayette, Ind., have shown how to reduce fuel consumption while improving the efficiency of hydraulic steering systems in heavy construction equipment. The new...
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Hydrostatic Transmissions: A Power Play in Wind Turbine Design
Johannes Schmitz, Nils Vatheuer, Hubertus Murrenhoff | RWTH Aachen Univeristy, IFAS An innovative concept replaces the common gearbox and frequency converter in conventional wind turbines with a...
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Radial-piston hydraulic motors
Available in nine sizes, the GS Series hydraulic motors come in displacements from 49 to 2,513 cc/rev and are rated for maximum continuous speed to 1,800 rpm (2,800 rpm intermittent), which is said to...
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Forget what you know about gear pumps
Most of us are well acquainted with gears, especially when it comes to gear pumps. Gear pumps typically use gears with teeth similar in geometry to those used for power transmission: they are...
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