Fluid Power World April 2019

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Servohydraulics keeps railway testing on track Accurate load tests rely on compact, quiet and efficient servo-axes.

Andreas Schnurrenberger Global Sales Manager Industrial Systems Bucher Hydraulics | Neuheim, Switzerland

Using energy more efficiently and reducing total operating costs are worthy and ambitious goals. But substantial improvements can seldom be achieved by simply changing components. Innovative hydraulic systems increasingly require new design approaches, often with software, control systems and networking to Industry 4.0 levels, to succeed in today’s ever-changing markets. Conventional hydraulics remains the standard in numerous applications. In particular, throttling control systems are still frequently used despite their high losses. Due to their operating principle—using throttling to control the supply of energy—they offer enormous potential for improving energy efficiency. Often, the better solution is based on the concept, “Pump control—Power on demand,” where only as much pressure and flow is generated to meet a drive’s immediate needs. Instead of a central power unit that involves long pipe runs, the drives are now arranged in a decentralized fashion, right at the actuators. Pipeline losses, installation space, as well as installation time and costs are therefore significantly reduced.

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