Page 8 of catalogue Bearing Technology for Rail Vehicles of Schaeffler Technologies GmbH & Co. KG

Running

Gear

Axlebox Bearings

cooperation with manufacturers and rail vehicle operating companies in order to gain products that are optimized for the operating environment in question. Cylindrical Roller bearings and Cylindrical Roller Bearing units For decades, Cylindrical roller bearings have stood the test in the wheelsets of all types of rail vehicles. They are particularly suitable for supporting high radial loads FAG axlebox bearings are subject to extreme loads at the interface between the wheelsets and the bogie frame and have to meet various technical requirements. If the rolling bearing Components are tested during a series of tests according to DIN EN 100, including ultrasonic testing of the inner and outer rings, they comply with the highest quality class and are labeled with “Class 1”. Compliance with DIN EN 10 is verified on special axlebox bearing test rigs. Axlebox bearings are developed in close and are usually designed with special internal constructions and polyamide cages for axlebox bearing applications. As well as other axlebox bearings, cylindrical roller bearings (in WJ/WJP standard design or special design) support the usual axial loads. FAG cylindrical roller bearings have a modified linear contact between the rollers and the raceway to prevent edge stresses. Cylindrical roller bearings in axlebox bearings are principally used in two main configurations:

• two single-row cylindrical roller bearings as a bearing set • one single-row cylindrical roller bearing as a ready-to-mount unit Double-row cylindrical roller bearing units have an integrated seal, are greased and are delivered ready to mount. The dimensioning is usually based on a calculated operating life of more than million kilometers. Spherical roller bearings FAG spherical roller bearings for wheelsets with fixed inner ring flange and solid brass or sheet steel cages withstand the toughest of conditions without any problems. They contain two rows of symmetrical spherical rollers that freely adjust themselves in the concave raceway. Spherical roller bearings are used in axlebox bearings for freight vehicles, locomotives and other rail vehicles.