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  • Low Noise, Increased Reliability, Digital Control: A New Generation of Radial Piston Pumps
    of the RKP is optimized as a compromise between hydraulic (low pressure drop, small inductivity) and mechanic (small deformation, low stresses) functionality. Pressure drop along the suction path was reduced by 20%. The sound emission of the new radial piston pump generation was reduced by up to 5dB
  • A hydraulically powered bike
    . The 2WD system developed by group, incorporates a piston pump and matching fixed-displacement hydraulic motor to power the front wheel when the back wheel loses traction and slips. The system is based on standard components from Rexroth Sweden, a unit of Lohr am Main, Germany (
  • Accumulators Deliver New Payoffs
    supplies high-pressure fluid that retracts the cylinder rod, but the weight of the piston rod and attached stringer rods pressurizes fluid on the extend stroke, powering a hydraulic motor that drives a pump. Diverting this high-pressure fluid to charge an accumulator lets it supplement pump flow
  • Medical Device Link .
    is an ultrahigh-pressure pump whose design mult i plies the 210-bar oil pressure acting on a large piston by 30 times in transferring that pressure to many smaller hydraulic pistons. The speed of the water jet created enables the volume of costly abrasive, in this case sand, to be reduced; in fact, not only is the
  • Compact pumps offer higher flow
    open-circuit piston pumps, Frames E (100 to 147 cc) and J (45 to 75cc), offer several sought-after features in mobile-hydraulic systems. For instance: "Based on maximum product dimensions, the Series 45 pumps are smaller than much of our competition by up to 15%, " says Stuart Archer, product manager
  • Engineers explore mobile equipment's future
    of the incoming fluid. Rexroth is also working to minimize environmental damage from hydraulic leaks. For instance, its redesigned A15VO piston pump has only one high-pressure seal versus 13 in the previous version. With fuel costs recently at record highs, "energy savings is now a key, decisive sales
  • Five pumps power blast-hole drill
    to run the hydraulic pumps. But first, dozens of holes for explosives must be painstakingly drilled into the rock. One of the biggest drill rigs at work around the world is the 200-ton PV-351 Pit Viper from Garland, Tex. Sophisticated hydraulics and an innovative power-splitting system also make
  • Getting more from mobile machines
    speed, emissions, and sound levels, and cuts fuel consumption by more than 15%. The HST replaces a conventional four-speed geared transmission with an engine-driven variable-displacement piston pump that provides flow to two variable-displacement

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