Bearing Cage Design Reduces Moving Mass

A new line of solid brass bearing cages features less mass, reducing the rolling bearings’ energy absorption and preventing sliding friction. In bearings that operate at high speeds, the force created by the rolling elements’ moving mass causes a significant additional internal load.

Especially in cylindrical roller bearings with relatively heavy solid brass cages, the acceleration of the rolling elements requires a large amount of energy. Another issue directly associated with the mass inertia of the rollers and cage is the sliding friction that frequently occurs in rolling bearings that are insufficiently loaded or accelerated too quickly and which, in extreme cases, can destroy the bearing’s precision-finished raceway surfaces. This new cage design addresses these issues by reducing cage mass and weight without compromising roller guidance accuracy. At the same time, an optimization of the cage bar cross-sections has resulted in an improved lubricant distribution in the bearing.

NKE Austria GmbH
www.nke.at