Rexroth (formerly known as Lohmann & Stolterfoht, L&S) develops and produces a variety of wind turbine gearboxes. The company also offers hydraulic solutions for wind turbine applications, such as hydraulic pitch controls, drive train brakes, filtration and cooling systems. Rexroth provides services that include technical support with factory trained and qualified personnel, strategically located stock…
SIMKO 300 seal ring proves itself in wind power facilities
Hydratech Industries, a seal manufacturer for wind power facilities and hydraulic systems, now uses a polyurethane seal from Freudenberg-NOK Sealing Technologies for its new hydraulic accumulator. Test comparisons with other products have shown that Freudenberg-NOK’s SIMKO 300 seal ring offers distinct advantages over frequently used polytetrafluorethylene (PTFE) seals with regard to operating life, form stability…
STAUFF LPM II particle monitor offers increased precision and resolution
The LPM II Particle Monitor from STAUFF uses newly developed high-performance LEDs, which provide a precise image of the degree of contamination in the hydraulic system. Thanks to its eight measuring channels, it is possible to distinguish particle sizes of between 4 μm and 70 μm. This lets users assess the contamination even at higher…
STAUFF releases PPC-04-plus compact mobile hydraulic tester
The STAUFF PPC-04-plus features extremely robust construction and an oil-resistant rubber coating to withstand impacts, vibration, dust, and moisture (protection class up to IP67) and is designed for use in particularly harsh conditions. This compact mobile tester measures pressure, temperature, flow rate, frequency, and speed in mobile and industrial hydraulic systems. The STAUFF PPC-04-plus is…
Line of axial piston pumps extends by one
HAWE Hydraulics, a global manufacturer and supplier of sophisticated hydraulic components and controls for the mobile, industrial, and renewable energy markets has added the V40M to its line axial piston pumps. The new pump has been designed for open-circuits in mobile machines and has a displacement volume of 2.75 in3/rev. Its swash plate design makes it…
How are hydraulics used in wind turbines?
The wind-energy industry makes good use of hydraulics, in particular how well it combines power density and durability for the muscle needed to pitch turbine blades that easily weigh two to three tons. In recent years, however, most utility-scale wind turbines for land installations have turned to electromechanical systems for this function. Electromechanical systems typically…
Zero-Max intros a hydraulic bushing for mounting large components in tight spaces
ETP Hydropress provides quick and precise fastening of components in tight spaces on large shafts from 80 to 200-mm dia. The company says Hydropress shaft bushings are ideal for locking into position gears, sprockets, pulleys, and similar components in a machine’s power transmission system. Handling torque ranges from 21,000 to 200,000 ft. lbs., the bushings…
Filter captures smaller particles at higher flow rates
Matthias Jung /Product Manager for Filter Elements / Argo Hytos GmbH /www.argo-hytos.com Recent detailed analysis of fluid flow through a range of filter materials has led to a better understanding of conditions inside a working hydraulic-fluid filter. The work has let our company identify the key factors responsible for pressure loss in the folded material. The…
Parker launches portable icountBSplus for efficient and accurate hydraulic oil contamination detection
Parker Hannifin has introduced the compact, icountBSplus, a fully contained, portable bottle sampling system that uses laser particle counting technology to ensure the fast and accurate detection of contamination in hydraulic oils and hydrocarbon fuels. A key component of the fluid-particle analysis and monitoring portfolio, the icountBSplus helps improve the reliability, productivity, and profitability of…
What you should know about gearbox filters and breathers
Filters and breathers on wind-turbine gearboxes must work under conditions found in no other industrial setting. Gearbox oil, for instance, undergoes large viscosity changes due to a wide temperature span and operating conditions. And then there is potential for a high water content in the oil from humidity and condensation. “Most current maintenance practices are…
SGS Group acquires Herguth Labs
SGS is proud to announce the acquisition of Herguth Laboratories, Inc. Herguth Labs is a commercial, oil, grease, fuel, and failure analysis laboratory in North America. The acquisition of Herguth Labs, with major testing laboratories located in San Francisco and Chicago,m introduces the SGS global network of 27 condition monitoring laboratories to the North American…
Hello SeaAngel: Hydraulic drive train could provide 7 MW offshore turbine
This article provides more detail to the Mitsubishi Sea Angel, a turbine with a hydraulic drive train. Mitsubishi Heavy Industries (MHI) has announced the start of test operations at Yokohama of a ‘large-scale wind power generation system that adopts a hydraulic drive train in place of the earlier gear-driven system. Engineers with Artemis Intelligent Power…
OEM begins test on what could be 7 MW hydraulic drive train
In December, Mitsubishi Heavy Industries, Ltd. (MHI) commenced test operation at its Yokohama Dockyard & Machinery Works of a large scale, hydraulic drive train in place of a conventional gear-driven system. The test operation is a part of the project launched in September last year to develop a hydraulic drive train for offshore wind turbines.…
Goodbye gearbox, hello hydraulics
The U.S. wind energy market includes roughly 30,000+ aging turbines. Of those, around 7,000 are down for repair at any given time. The bulk of repairs are gear failures in gearboxes and yaw drives. Other turbine-stoppers include main-shaft bearings and seal failures, electrical generator overloads, and over-speed brake failures. High costs and duration of repairs…
Lube company offers new product at HUSUM
A lubrication company will present lubricants and services at the HUSUM WindEnergy 2012. Klüber Lubrication will unveil its adhesive lubricant Klübersynth AG 14-61 for girth gear/pinion drives and plain bearings. The lubricant has a wide service temperature range, down to -30°C, the company says. Also on display will be its synthetic gear oils of the…
2012: Trends in wind hydraulics
Hydraulic equipment does a lot of work in the nacelle especially as OEMs design turbines with ratings of 2 MW and more. Just a few tasks that can use hydraulic power include pitch control, service braking, rotor interlocks, service-crane controls (which are more prevalent on larger turbine and especially those offshore), and to a lesser…
New website for hydraulics
Power Team has launched a newly redesigned website with enhanced features that let users more easily search products and product specifications. The company manufactures high-force hydraulic pumps, cylinders, and tools. The equipment ranges from hydraulic torque wrenches and power units for constructing wind-power turbine towers to high tonnage portable jacks for maintaining large mining trucks.…
Looking for leaks
Alternative energy technology developers looking for leak detection equipment that can be custom configured to their particular test-application requirements without added costs, can obtain a competitively priced and first-of-a-kind leak and flow tester from uson — the Optima vT Leak and Flow Tester. The device includes one or two test channels with four sensors each,…
Hydraulics 101
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 comes in just selecting one component. Selecting a proportional hydraulic valve for pitch control…
400-page hose catalog ready for users
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 Parker hydraulic hoses, fittings, equipment, accessories and technical information. From the Parker Tracking…