Hydraulics 101

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Excerpt: Hydraulics will probably provide the heavy-duty muscle in the nacelle. The systems there will be made of two-position valves, proportional valves for precise control, rotational unions, hoses, lubricants, fittings, and pumps. Valve selection provides a good example of the complexity that come …

400-page hose catalog ready for users

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Excerpt: A recent version of Hose Products Division Catalog 4400 is now available from Parker Hannifin Corporation, the global leader in motion and control technologies. The up-to-date guide is the fluid power professional's single best resource for product information and installation assistance for Par …

Couplings Lock Gears, Discs, and more to Shafts

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Excerpt: The big advantage for Ameriloc HLD (Hydraulic Locking Devices) is the short time it takes to install. With larger diameters, 530 mm, the HLD can be tensioned in a few minutes, compared to several hours required for another similar design. The hydraulic pump required for assembly can be a stationary …

Cylinders for hydraulic pitch adjustment

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Excerpt: German company Liebherr is offering their hydrau-lic cylinder for hydraulic pitch adjustment in wind turbines to the American market. The company offerso both electromechanical pitch adjustment with gearboxes as well as hydraulic pitch adjustment with the corresponding blade bearings as a full s …

Seal material for hydraulics good to 270°F

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Excerpt: A proprietary polyurethane compound, Zurcon Z25, has all the characteristics of the widely used Zurcon grade Z20 with an elevated operating temperature to 130°C or 270°F. Zurcon Z25 is recommended for hydraulic applications in which high-temperature performance is required due to an improved e …

How are hydraulics used in wind turbines?

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Excerpt: Hydraulics will probably provide the heavy-duty muscle in the nacelle. The systems there will be made of two-position valves, proportional valves for precise control, hoses, lubricants, fittings, and pumps. Valve selection provides a good example of the complexity that comes in just selecting one …

Trends in wind hydraulics

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Excerpt: As in other areas of the wind industry, hydraulics engineers are looking for ways to improve turbine operating efficiency while reducing maintenance. This leads to a focus on preventative maintenance, rather than just replacing worn parts with new ones from the OEM. Research is also being co …

Leak-free hydraulic fittings prevent vibration failure

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Excerpt: Anthony Palanci Product Sales Manager Tube Fittings Division Parker Hannifin Corporation Cleveland, Ohio parker.com/TFD   The cost of scheduled maintenance for wind turbines has been relatively low.  However, unscheduled maintenance is a completely different story. Until recently th …

Free software finds tools for tube assembly tasks

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Excerpt: Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 A recent web-based app makes it fast …

Fluid-power organization gets pumped for wind power

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Excerpt: Insuring a place for fluid power in wind-power technology is the latest example of the Center for Compact and Efficient Fluid Power’s (CCEFP) reach toward realizing two of its goals: Reducing our nation’s energy usage and increasing the ways in which fluid power can improve quality of life. Wide …