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  • How to choose a linear rail and carriage for linear motion: Linear bearings give new meaning to riding the rails
    Linear rails come in basically two types, round and square. The criteria for choosing one over the other is no different. than choosing any other machine component; spec out the. design, defi ne the system's objectives, and work from past. successes and mistakes.
  • New Test Facility Mimics Rail Car "Humping "
    cars it simulates. Over 400 ft of reinforced concrete supports equipment used to absorb the impact from a 30,000-lb test car and up to a 12,000-lb payload. The car can accommodate packages (payloads) to 15-ft long, 9-ft wide, and 12-ft, 9-in. high. A 200-hp, variable-speed motor mounts on the head
  • Leland Teschler s Editorial: Taken for a Ride: Pros and Cons of High-Speed Rail
    Transit ridership did indeed rise slightly last year when gas prices went to the moon, but the increase was a meager 3.4% over the year before. The effect on traffic congestion was insignificant. Adding high-speed trains to the mix is unlikely to change things. For proof, says O'Toole, look at Europe
  • 900 MHz Wireless SCADA Network Communicates over Several Miles of Infrastructure
    NYC Transit operates 820 miles of track, making it one of the largest rail transit systems in the world. Millions of people ride the subway every day. In fact, in September 2014, the agency recorded five days with more than 6 million riders, breaking the previous. single-day ridership record five
  • Round or square?
    is learning the fundamental qualities of each type and adopting those most relevant to the application. Round-rail technology has been honed to near perfection over the past 60 years and square profile rails have been around a respectable 35. Most of the inherent design problems have long been ironed out
  • Comin' up around the bend
    moving carriage. Many applications require independent control over multiple moving elements and the ability to travel around curves. Now, new servomotor designs let motion-control engineers design straight and curved motion paths. The PackTrak system is a direct-drive, movingmagnet linear
  • Letters - 06/05/08
    to a rail terminus and back. This would most likely be relatively slow driving over fairly short distances. The PPM would also have the electrical and mechanical connections to the rail system. So you drive to the terminus where your PPM hooks up to the rail. Then the rail controller takes over
  • Military Develops Electric Slingshot
    part of the Navy 's project to arms its ships with this new type of weapon. Over the next decade, the Navy plans to deploy newer ships that generate significantly more electricity. The Arleigh Burke Class destroyers, for example, were first deployed in 1991 and carry 7.5 MW of electrical generating
  • Medical Device Link . UV Curing Device Plays Integral Role in Bonding Guidewires
    North American physicians perform an estimated 1 million angioplasty procedures each year. Essential to the success of these procedures are guidewires the rails over which all other devices used in angioplasty must travel. These guidewires are made up of stainless-steel and gold-platinum

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