Bearings of gauge adjustment devices for railway running gears

The advantage of the bearing sliding sleeve version of the gauge adjustment device: no need to relieve the bearing load during the change of rail. Applies to both trucks and passenger cars. The various rail gauges in Europe and Asia always cause delays in transit for passenger and truck traffic. The use of automatic gauge adjustment device can solve the above problems. This gauge adjustment device is installed on the border station, it can adjust the wheel position of the vehicle (equipped with adjustable wheelset) very quickly. Maintenance-Free Cylindrical Sliding Bushings The sliding bearings supplied by Schaeffler Group Industry are used in the gauge adjustment device and help to extend the maintenance interval. Online service life up to 500 000 km. Schaeffler ELGES brand sliding bushings with ELGOGLIDE coating can successfully realize the axial adjustment of the wheel on the wheelset. This sliding bush has low friction properties and consists of a steel support body and a layer of ELGOGLIDE sliding fibres which are tightly adhered to its surface by means of a moisture-proof adhesive. Sliding bushings do not require lubricants and have high radial load carrying capacity and good vibration damping properties. They have been successfully used on vehicles with axle loads ranging from 18 t to 22.5 t, and applications on 25 t axle load vehicles are currently under development. Needle Bearings for Supported Rollers In TALGO gauge adjustment, the wheelset must be unloaded first during the gauge adjustment. At this time, the weight of the entire vehicle is borne by the support-type rollers. Special support rollers with INA needle roller and cage assemblies are used here. This bearing arrangement is ideal for shock loads and high accelerations. Radial needle roller and cage assemblies are used to withstand high radial loads and support vehicle weight during gauge adjustment. The axial force acting on the outer ring of the support roller is borne by the thrust needle roller bearing and the shaft seat locating washer.