NEWS

WIRES

OTHER

Hubble Telescope Service Mission Featured in 'Hubble 3D' IMAX Movie Aided By Timken® Precision Bearings

To view the multimedia assets associated with this release, please click http://www.prnewswire.com/news-releases/hubble-telescope-service-mission-featured-in-hubble-3d-imax-movie-aided-by-timken-precision-bearings-102028343.html

ATK's Mini Power Tool equipped with Timken® custom thin-section precision ball bearings engineered especially for the application's unique requirements helped to enable the crucial repairs to return the Hubble Space Telescope to active duty. Wearing bulky spacesuit gloves, the astronauts operated the Mini Power Tool flawlessly to unfasten dozens of tiny screws and replace circuit boards on the Advanced Camera for Surveys (ACS) and the Space Telescope Imaging Spectrograph (STIS), all while orbiting the Earth at 17,500 mph. The instrument repairs were critical to the ongoing operation of the Hubble telescope, which has since revealed new images of faraway galaxies after resuming its journey.

Timken engineered the miniature bearings in close collaboration with ATK to achieve smooth operation in the challenging space environment. Extreme operating temperatures, the vacuum of space and failsafe mechanical requirements were among the design parameters ATK and Timken engineers had to consider in designing the tool. Both companies have pedigrees supplying space-certified hardware for numerous NASA missions.

"When a spaceflight solution is needed, Timken is a trusted name with decades of experience," said Wayne Denny, Timken's chief engineer for Health and Positioning Control. "Aerospace engineers know they can turn to us to develop custom solutions that meet demanding conditions and environments."

About The Timken Company

The Timken Company (NYSE: TKR, http://www.timken.com) keeps the world turning with innovative friction management and power transmission products and services, enabling our customers' machinery to perform more efficiently and reliably. With sales of $3.1 billion in 2009, operations in 27 countries/territories and approximately 17,000 employees, Timken is Where You Turn® for better performance.

About ATK

ATK (NYSE: ATK), is a premier aerospace and defense company with more than 18,000 employees in 22 states, Puerto Rico and internationally, with revenues in excess of $4.8 billion. News and information about ATK is available at www.atk.com.

The Timken Company

Media Contact: Lorrie Paul Crum

Manager - Global Media and Strategic Communications

Telephone: (330) 471-3514

Mobile: (330) 224-5021

lorrie.crum@timken.com

Investor Contact: Steve Tschiegg

Director - Capital Markets and Investor Relations

Telephone: (330) 471-7446

Facsimile: (330) 471-2797

steve.tschiegg@timken.com

For Additional Information:

www.timken.com/media
www.timken.com/investors

SOURCE The Timken Company