GOTHENBERG, SWEDEN — SKF recently announced it has developed a new generation of automatic timing belt tensioner units for engine applications with significant improvements including ease of installation and enhanced belt life compared to existing tensioner technology. The new tensioners are expected to reach production in 2006 and were first shown at the Hannover Fair in Germany, 11th to 15th April, 2005.
A timing belt tensioner applies force to the engine timing belt that maintains synchronization between the crankshaft and camshaft. The SKF smart tensioner automatically self-adjusts to provide consistent belt tension while the integrated one-way clutch protects against “tooth jump” in the event of engine kickback. This ensures proper engine timing and function.
SKF’s new innovation, the Smart Automatic Belt Tensioner Unit (S-ABTU), features a single long-arm eccentric tensioner enabling exceptionally easy and accurate installation that provides very precise belt tension control throughout the entire operating range of the engine and the service life of the belt. The revolutionary design also improves belt durability and extends service life while providing protection against “tooth jump” and the resulting loss of timing drive synchronization.
“SKF has produced belt tensioner units for over 30 years and the S-ABTU is further proof of SKF’s commitment to innovative solutions that provide system improvements to our customers,” says Alexander de Vries, vice president, Product & Systems Development, SKF Automotive Division. “This revolutionary tensioner concept, with its excellent dynamic performance and simple installation process, contributes significantly towards achieving system service life equivalent to the life of the engine.”
SKF’s S-ABTU Key Features Fast, easy and safe installation (“Pull the Pin” technology): The S-ABTU is first bolted into position and then begins operation by simply pulling out a pin. The tensioner automatically self adjusts to the correct position providing optimal, immediate and consistent belt tension. This simple, failsafe installation procedure is suitable for either hot or cold engines, and provides the same advantages whether on the assembly line or in the service garage. SKF’s S-ABTU was developed at the company’s facility in St. Cyr, France.
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