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The latest information on hydraulic and pneumatic motion control. February 7, 2011

Gearing up for IFPE

It's been a busy few weeks as we've been caught up in "show fever" over here at Hydraulics & Pneumatics. I flew south to Atlanta for AgConnect last month, and if IFPE is on your horizon, be sure to check our website next week for even more IFPE coverage. We've got you covered with an exhibitors' list, show map, education schedules, and products being highlighted at the event.

In the meantime, read on about electropneumatics, hydraulics in the shipyard, pneumatics in food processing, and hydraulics for ag machines.

And don't forget to log onto The World’s Smartest Design Engineer. Our 2010 winner was nanotube, a.k.a., Steven Ho, a process engineer from Missouri City, Texas! Players can accumulate points to win one of five $100 gift certificates and earn a shot towards our grand prize, $1500, so keep playing!

- Mary C. Gannon


Protection from environment is key to lift longevity
Shipbuilding can wreak havoc on hydraulic systems. It occurs ocean side, so saltwater spray poses a daily threat to the corrosion resistance of piston rods in hydraulic cylinders. But a greater threat comes from spatter and other debris generated by welding operations. Welding occurs throughout the construction of ships, and welders seldom have the luxury of standing on solid ground. Instead, they may be perched atop a telescoping lift. These lifts are also used for other assembly and painting, but welding poses the greatest threat to hydraulic systems because the debris can cause premature failure of cylinders and hoses. And even if it doesn’t damage the cylinder itself, debris that adheres to a moist piston rod can quickly accumulate inside the hydraulic system to cause component malfunctions.


Boosting engine performance with electropneumatics
As requirements for commercial vehicles get more demanding, the diesel engine is rapidly becoming a far more sophisticated platform. Requirements driving this advance include emissions regulations, fuel efficiency standards, and higher user expectations for drivability and reliability. Meeting these demands requires control systems and associated actuators able to maximize the performance of specific vehicle systems.


Multi-function actuators position food trays
Shelf life is the key to success for groceries — particularly for ready-to-eat prepared foods. Obviously, the packaging of these products plays a major role in their shelf life. Orics Industries Inc., Farmingdale, N.Y., a company that engineers automatic packaging systems, supports extended shelf life for prepared foods with its modified-atmosphere packaging (MAP) technology.


New design calls for innovative hydraulics
There’s really only one option when a machine series comes to the end of its life cycle, and the competition starts gaining market share. You must develop a brand new series with the latest technology, impressive user benefits, and an overall design that leaves other machines in the dust.

New Products

Piston accumulators
Hydro-pneumatic piston accumulators from Parker Hannifin Corp., provide long-term effectiveness in critical wind turbine applications through significantly lower maintenance and servicing costs. They are avaialble in 1.5- to 20-in. bore sizes with capacities up to 200 gal. All are designed to fit specific wind turbine applications. They have less frequent service intervals and maintenance requirements compared to bladder or diaphragm units, so provide a lower total cost of ownership, saving substantial operating costs over the life of the turbine. Because of their small seal, they fail gradually and allow plenty of time for scheduled maintenance.


Pressure transmitters, switches
The 800/810 series of electronic indicating pressure transmitters/switches from Noshok provides continuous pressure monitoring and allows programming of set points without applying pressure. The 800 series is available in stainless steel and 810 series comes in black anodized aluminum. They are rated for pressures from 14.5 to 9999 psi. Three switching output options are available: two switching outputs; one switching output and one analog output (4-20 mA or 0-10 V); or two switching outputs and one analog output (4...20 mA).

Stainless-steel connectors
FasTest TwistMate MIT (internal) and MET (external) connectors come in stainless steel and provide a seal design that delivers a leak-tight connection to threaded pipe — quickly and without the use of wrenches and thread sealants. Twist-to-connect and pressure-assisted, grip-and-seal design allows fast, safe and repeatable threaded connections, eliminating thread wear and damage common to traditional connectors. They are twisted to finger-tight onto the mating thread profile. When system is pressurized with air or hydraulic pressure, main seal is pressed against test piece and connector will automatically seal. The internal piston action maintains the seal with minimum pressure. They are rated for pressures up to 10,000 psi. Sizes range from 1/8 to 3 inches NPT, and connectors are also available in BSPP, BSPT, SAE, and Metric specifications.

News from MD

Illuminate the World: Energy Efficiency Summit 2011
February 17th & 18th, 2011
Many issues surround the adoption of standards and testing requirements for energy efficient lighting. Illuminate the World: Energy Efficiency Summit 2011 will address the changing landscape of ENERGY STAR certification for lighting products, present-day and future standards, testing procedures, technological advances, and market dynamics. CSA, a global leader in testing and certification for more than 85 years, has partnered with Energy Efficiency & Technology magazine to help educate lighting manufacturers on compliance with energy efficiency rules and regulations. This exciting new event will provide a comprehensive conference to educate lighting professionals and increase their awareness of global lighting standards and usage.
Click here for more information

The 2nd season has begun! Players from across the globe are still competing for fun, education, prizes and the ultimate bragging rights. Thanks to our sponsors for their support of the exciting online opportunity for engineers! Play Now!

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Click Here for a list of archived Machine Design webcasts.

Sponsored Featured Links

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Fabco-Air miniature pneumatic linear slides
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Contact Information
Editorial questions:   Mary Gannon 216-931-9498
Advertising/sponsorship opportunities:   Virginia Goulding 216-931-9893

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