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  • Contamination: hydraulic system enemy no. 1
    Up to 90% of all hydraulic system failures can be attributed to contaminated oil, says hydraulic component maker Muncie Power Products, Muncie, Ind. And a recent Canadian study found particlecontaminated hydraulic oil accounts for 82% of all wear. Filtration systems help avert the problem
  • Controlling high-performance electrohydraulics
    material density. The hydraulic motion controller smoothly transitions each axis from position-based control to pressure-based control as the cylinder reaches a preprogrammed location and tonnage. The smooth transition offers tighter control and more flexibility than mechanical presses, with higher
  • Accumulators Deliver New Payoffs
    valves and shunting it to the reservoir. But charging an accumulator with the high-pressure hydraulic fluid instead means previously wasted energy is stored and can subsequently be used to supplement pump flow to lift the excavator arms and load. This energy recovery makes it possible to reduce pump
  • The art of digging a hole
    can also be adjusted to compensate for changing air pressures as trains pass, making passengers and crew more comfortable. A technician from Wirth Tunneling Ltd. in Scotland examines the grooves in hard rock made by a TBMs cutting discs. Tunnel-boring machines (TBMs) could be the ultimate power tool

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