Schaeffler Technologies develops new cylindrical roller bearing cage to reduce rolling element wear

Schaeffler Technologies AG recently submitted a patent application titled "An Improved Cylindrical Roller Bearing and Its Retaining Structure", with publication number CN 119641798 A. The application was submitted in September 2023.

This new patent proposes an innovative design scheme for cylindrical roller bearings, with a focus on the unique structure of its cage. The cage is composed of multiple beams evenly distributed along the circumference, each beam equipped with an axially extending inclined surface. In addition, two side beams are connected at both ends of these crossbeams, collectively enclosing multiple closed-loop pockets for carrying cylindrical rolling elements. The special feature is that convex surfaces are set on these inclined surfaces of the crossbeam, which extend along the axial direction and slightly protrude from the inclined surfaces of the crossbeam, directly contacting the raceway surface of the cylindrical rolling element and playing a guiding role. This design effectively reduces the contact area between the cylindrical rolling element and the cage, lowers friction, and reduces wear on the surface coating of the cylindrical rolling element, thereby extending the service life of the rolling element.

(Source: Financial Industry)

This invention optimizes the interaction between the cylindrical rolling element and the cage by introducing a unique geometric structure, which not only significantly reduces the friction between the two, but also improves the overall performance and durability of the component. It is of great significance to improve the efficiency, durability, and reliability of cylindrical roller bearings.

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