RAIL TEST RIG FOR AXLEBOX BEARINGS

The special axlebox bearing test rigs are able to simulate travel speeds of up to 500 km/h. All test rigs at Schweinfurt enable independent testing in accordance with the requirements of the latest European Standard DIN EN 12082. These tests are used as verification of the suitability of axlebox bearings for real operational conditions. The AN55 bearing test rig, for example, is primarily used to test double-row tapered and cylindrical roller bearings in their original housings. This system provides data on bearing behaviour under constant radial load and varying axial loads, as well as data on operating temperatures and grease operating life. Axlebox housings and bearings are air-cooled, which has a considerable influence on grease operating life. The test rig is therefore equipped with an air stream simulation facility, which generates wind speeds up to 10m/s. On another test rig at Schweinfurt, axlebox bearings and their original housings undergo leaktightness water spray tests.