ITS Main features and performance parameters of 353130A compact bearing for 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 bearing use, the 353130A compact bearing was developed. The effect of fretting wear on bearing performance.

◆Main Features

The 353130A compact rolling bearing cancels the inner oil seal and the sealing seat, shortens the axial width of the bearing, adopts a plastic cage, has a stable sealing effect, and is suitable for the existing maintenance system.

◆Main performance parameters

Commercial operating speed 120km/h

Axle load 25t (245kN)

Design life 200´104km (wheel diameter is calculated according to φ820mm)

Operating ambient temperature -45°C～+50°C, and can adapt to the thawing requirements of thawing warehouse for 3 hours and 110°C

Operating environment humidity 100%

Grease Type Ⅳ grease for rolling bearings of railway vehicles

The maximum allowable temperature rise is 50°C

Material The ring adopts electroslag remelting G20CrNi2MoA carburizing bearing steel; the roller adopts electroslag remelting GCr15 bearing steel; the cage adopts glass fiber reinforced polyamide

Rated dynamic load 962kN

Rated static load 1926kN

Bearing free axial clearance 0.60mm～0.70mm

Cage radial travel amount 0.15mm～0.65mm

Fat injection amount 430g～480g

Related: What bearings are used in trains?

Rolling bearings with massive cages are the most common solution. Such as cylindrical roller bearings, tapered roller bearings, four-point contact ball bearings, angular contact ball bearings, large single row deep groove ball bearings.