September 30, 2020
GGB ANNECY VIRTUALLY OPENS THE DOORS OF ITS PRODUCTION PLANT
For the first time in its history, GGB Annecy will open the doors of the manufacturing plant...
PyroSlideTM 1100 Webinar:
Discover How to Beat the Heat with GGB’s New High Temperature Powder Metal Bearing Solution
Hydro White Paper:
GGB Composite Bearing Design with Improved Tribology and Machinability for Aggressive Applications
Get in touch with our experts
Oil & Gas
Increase Service Life
Replace Roller Bearings
Reduce Size / Weight
Engineered Plastics Bearings
Fiber Reinforced Composite Bearings
Metal and Bimetal Bearings
Bushing Blocks and Thrust Plates
July 2, 2015
The U.S. Army Corps of Engineers (USACE) has approved GGB Bearing Technology’s new HPMB® filament wound bearings for use in hydropower turbine wicket gates. The approval is based on simulation testing performed by Powertech Labs.
Conducted in April 2015 in accordance with USACE specifications, the testing simulated the operating conditions of a wicket gate in a Francis turbine. Test results showed an extremely low stick-slip effect, indicating smooth operation of the regulating mechanism in a turbine, as well as a low wear rate with no visible bearing damage in wet, dry or edge testing.
According to the test report, “The dynamic and static coefficients of friction were quite close to each other, which indicates a smooth end of stroke direction reversal. The test ran smoothly and quietly and the coefficients of friction remained stable for the duration of the test. Overall the bearing was in excellent condition…the wear rate was exceptionally low.”
In addition HPMB® offers high load bearing capacity, plus excellent resistance to shock and misalignment and dimensional stability in water. It is also the best performing bearing material under conditions that include dithering -- the high frequency, small angle oscillations present in turbine operation.
HPMB® features a machinable liner that provides tight dimensional control and class-leading tribological properties for hydropower applications. Post-installation ID machining allows IT7 diametrical tolerance to be achieved with improved concentricity and cylindricity. Liners can be machined with commercially available inserts.
HPMB® bearings are available in three configurations: finished by GGB and ready for installation; finished OD and length and ready for end-user ID machining prior to installation; and finished OD and length and ready for end-user ID machining after installation. The last two configurations are valid for refurbishing turbines by OEMs that do not know exact component dimensions and tolerances.
HPMB® bearings are available in ID sizes up to 500 mm and various wall thicknesses. For more information contact Yuri Klepach at email@example.com or firstname.lastname@example.org.
With production plants in the U.S., Germany, France, Brazil, Slovakia and China, GGB is the world's leading manufacturer of high-performance self-lubricating and pre-lubricated plain bearings. The company supplies more than 30,000 customers worldwide in countless applications and industries, including automotive, fluid power, agricultural and construction machinery, sports and recreation equipment, renewable energy, primary metals and general industry. Its plain bearing portfolio includes metal-polymer, solid polymer, filament wound and metals and bimetals, as well as bushing blocks, thrust plates and specialized housings and assemblies. In addition, GGB offers industry-leading R&D and testing facilities, flexible production, technical support and a global distributor network. Additional information about GGB is available at www.ggbearings.com.
Explore our customer reviews
The Bearing Bulletin