Railway transportation is a high-speed development industry, bearing in the railway production and application industry is indispensable, used in the railway industry bearing must have high bearing capacity and safety performance.
Railway bearing applies railway, wheel axle bearing railway locomotive and vehicle wheel axle system adopts different structural design due to different application conditions, locomotive and passenger car have axle box, bearing is connected with bogie through axle box, railway freight car has no axle box, bearing is connected with bogie side frame through bearing saddle. The bearing bears the impact load between the wheelset and the bogie frame, and also bears the axial load generated by the turning of the vehicle. The wheel shaft bearing structure includes cylindrical roller bearing, cylindrical roller bearing unit, tapered roller bearing and tapered roller bearing unit.
Bearings for high-speed rail
The running speed of the bearing is above 200km/h, which requires the bearing to have high bearing capacity and safety performance.
Because the double row tapered roller bearing has a better sealing structure and the clearance has been adjusted before installation, this type of bearing is widely used in high-speed iron bearings.
Bearing for Locomotive
Railway locomotive bearing wheel and axle system adopts different structures due to different application conditions. Locomotive and bus have axle boxes, and the bearings are connected to the bogie through the axle boxes. Generally, cylindrical roller bearings are used.
Bearing for Truck
Wheelset bearings generally use cylindrical roller bearings.
Bearing for Subway
Generally, double-row cylindrical bearings with sealing devices on both sides or two paired single-row cylindrical roller bearings with sealing devices on one side are preloaded with grease.