P1 medium-pressure, variable displacement, axial-piston pumps suit pressures to 4060 psi. Compact, round housing is quieter than other designs, offering continuous service at high drive speeds. Three models have maximum displacements of 4.58, 6.4...
PVWC closed-loop, hydrostatic axial-piston pumps offer low hp for high-performance applications. They are rated for peak pressures to 5000 psi and maximum continuous speed to 3600 rpm and offer theoretical maximum displacements from 0.66 to 1.35 ...
Repaving asphalt roadways requires stripping off the old layers of asphalt before the new surface can be laid. A machine for accomplishing this is the RX 50B cold planer from Roadtec, Chattanooga, Tenn., a leading manufacturer of pavement placeme...
Ask someone from a northern state or Canada about the seasons of the year, and you'll likely hear, "We have two: winter and road construction season." This implies that road construction equipment must be designed to operate in hot environments...
HST drives 3-speed gearbox to move huge, 6-row cotton picker.
Cotton picking often goes on around the clock; stadium-lighting package of six halogen lamps creates floodlight pattern for night visibility out in fro...
Parker's new RunWise hybrid system uses a hydrostatic drive system to store energy and accelerate high stop-and-start vehicles. A new hydro-mechanical series, the RunWise drive system, from Parker Hannifin Corp., Cleveland, is said to signifi...
A closed-loop speed control uses an amplifier driven by system error, which is the difference between the command (where we want the speed to be) and the feedback (where the speed actually is).
Steaks were once considered the biggest export of Argentinean agriculture. Now, its number one export is corn — 80 million tonnes annually from 1.8 billion km 2 of farm land. Not surprisingly, Argentina needs a lot of tractors. The 500 GLP, from ...
As many plastic injection machine manufacturers move toward all-electric designs, there remains one very important part of the machine that continues to use 30-year-old technology — a "core pull/set" system. Approximately 30% of all machines use ...
