Timken Unveils New UltraWind Series: The Ultimate Reliability-Enhancing Solution for Multi-Megawatt Turbines

Timken Unveils New UltraWind Series: The Ultimate Reliability-Enhancing Solution for Multi-Megawatt Turbines CANTON, Ohio: May 26, 2010 ˇX The wind energy industryˇ¦s trend toward multi-megawatt turbines, whether onshore or offshore, presents particular challenges when it comes to reliability. For Timken (NYSE: TKR) it is an opportunity to put 110 years of engineering history to work on the ultimate ˇ§appˇ¨: a new series of massive, ultra-large tapered roller bearings based on the revolutionary invention company founder Henry Timken patented in 1898. "Imagine how Henry Timken would delight in seeing the evolution of his tapered roller bearings to drive wind turbines, with outer diameters upwards of 3 meters (9 feet)," said Hans Landin, Timken's director of process original equipment and wind energy. "The fundamental engineering of the UltraWind Series in a turbine erected high on a„ois similar to the original. Yet the application demands a system„owind tower, in extreme conditions with unpredictable loads approach combining tapered roller bearings with integrated seals, lubrication and condition monitoring." With the highest life ratings in the industry verified by Germanischer Lloyd, the new UltraWind Series of bearings provides a cost-conscious, simplified drivetrain for main-shaft wind turbine designs (both gear and gearless). For multi-megawatt turbines, the pre-loaded tapered roller bearing type is better suited than other bearing types to address concerns such as stresses, rigidity and load management that affect bearing life and reliability. Timken's UltraWind Series of bearings provides superior stiffness to manage motion of the main shaft and rotor. Its bearing raceway profiles are designed to control maximum stress levels for enhanced durability and the cage is optimized for capacity and roller retention, including both steel and polymer configurations. The UltraWind Series is part of an integrated main-shaft system solution designed to customersˇ¦ specific operating requirements. In close collaboration with customers, Timken takes into account the total operation of the bearing and power-drive system to optimize the sustainable life of the equipment. Timkenˇ¦s UltraWind Series is among what is for Timken a record number of innovations for the wind-energy industry, which the company exhibited at the 2010 Windpower Conference and Exhibition held in Dallas May 22-26. More information about Timken's windpower capabilities is available online, including a complete media kit, at: http://www.timken.com/en-us/about/NewsRoom/MediaKits/Pages/MediaKits.aspx. Animations illustrating the company's wind-energy applications are available at: http://www.youtube.com/thetimkencompany.

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