Railway needs technical and economical solutions which have to have lower life cycle cost. Therefore, axle box bearing need minimize maintenance requirements. The axle box bearing must be able to work under full load and extreme weather conditions.
Some axle box design also adopts load-bearing saddle. A typical requirement of truck is to have an extremely long working hours and maintenance intervals.
Y25 bogie in Europe, for example, use hole type axle box and the cylindrical roller bearings or spherical roller bearings. 3 ¨C Piece style bogie truck usually use tapered roller bearings unit (TBU) and load-bearing saddle. Tapered roller bearing unit (TBU) contain a contact seal, in order to prevent the pollution. To achieve the low life cycle cost, and to maintain minimum requirements need to use a cost-effective bearing and axle box design. JAJ provides unique complete product¡¯ including axle box, bearing components, engineering services and state of repair.