Energy efficient balancer shaft leads to fuel savings on Mercedes-Benz engine

The Schaeffler Group has now commenced volume production of its INA lightweight balancer shaft for the new Mercedes-Benz OM 651 high performance diesel engine, leading to a valuable reduction in fuel consumption.

The Schaeffler Group has now started volume production of its INA lightweight balancer shaft and rolling bearing assembly for the new Mercedes-Benz OM 651, a 2.2 litre, four-cylinder engine that produces up to 204ps and 500Nm torque.

The OM 651 is a high-performance diesel engine that sets new standards in terms of performance and fuel consumption. The weight of the INA balancer shaft and bearing assembly are optimised in order to improve engine efficiency and reduce overall fuel consumption.

The INA lightweight balancer shaft was developed primarily for four-cylinder applications such as the OM 651 engine. By replacing conventional plain bearings on the balancer shaft with rolling bearings, friction is reduced. Using needle roller bearings with a raceway directly on the shaft reduces friction by up to 50% over the whole speed range.