Schaeffler is to be awarded the Steel Innovation Award 2009 for its lightweight balancer shaft with rolling bearing supports for modern, four-cylinder car engines. "The lightweight balancer shaft with rolling bearing supports improves running characteristics and reduces fuel consumption", according to an explanatory statement from the jury of this prize which is awarded every three years.
The rolling bearing supports with reduced friction characteristics enable a significant improvement in energy efficiency compared to the plain bearings which were previously used. In this specific case, the power consumed internally in the engine is reduced in total by 1.5 kW (2.0 PS). The rolling bearing supports also enable a new optimized mass layout of the balancer shafts with a mass that is reduced by around one third. This means the two balancer shafts alone, which run at twice crankshaft speed due to the design, reduce engine weight by more than a kilogram. The filigree design minimizes the shaft
Product Model | Inside Diameter | Outside Diameter | Thickness |
7007CDB KOYO | 35 | 62 | 28 |
HAR007CDT KOYO | 35 | 62 | 28 |