ITS high quality double-row tapered bearing units

For rolling bearings used in railway freight cars, double-row tapered bearing units without axle boxes are generally used, which are directly connected to the side frames of the bogie through the bearing saddle. Due to the characteristics of light structure, easy assembly, convenient operation and maintenance, etc., the double row tapered bearing unit without axle box has been widely used in railway freight cars. In order to further meet the needs of speed-up and heavy-loading of railway freight cars and improve the reliability of bearings, a compact bearing was developed.

In order to further meet the needs of speed-up and heavy-loading of railway freight cars and improve the reliability of bearing use, in January 2006, my country introduced CTBU150 type compact bearing technology, established the standard of 353130B type bearing, and designed 353130B type bearing. In May 2006 In January, the 353130B bearing was loaded and used, and the localization of the railway bearing 353130B was realized.

◆Basic operating conditions

●Operating speed: 120Km/h

Axle load: 25 tons

Axle load: 23.83 tons

●Maximum axial load: 9.53 tons

●Environmental conditions: -45°C to +50°C

●Maximum relative humidity: 100%

The maximum allowable temperature rise of the bearing: 55°C

Regular maintenance: under normal use and maintenance conditions, 800,000Km or 8 years (whichever comes first)

◆Basic application parameters

●Outline size: Φ150xΦ250x160x180.6mm (inner diameter x outer diameter x outer ring width x assembly height)

The difference between the inner diameters of the inner ring: ≤0.013mm

The interference between the inner diameter of the inner ring and the axle journal is 0.051-0.101mm

Grease: Type IV grease for rolling bearings of railway freight cars

Press-fit force and termination pressure

Pressing force: 68.6KN~235.2KN

Termination pressure: 313.6KN~352.8KN

Axial clearance after pressing: 0.05~0.45mm

Related: The most frequently used bearing types for gearboxes are: Cylindrical roller bearings, tapered roller bearings, angular contact ball bearings, four point contact ball bearings, deep groove ball bearings.