Tapered roller bearing unit, BT2-8559 B

SKF is a world-leading provider of innovative solutions that help industries become more competitive and sustainable. By making products lighter, more efficient, longer lasting, and repairable, we help our customers improve their rotating equipment performance and reduce their environmental impact. Our offering around the rotating shaft includes bearings, seals, lubrication management, condition monitoring, and services.

BT2-8559 B is a tapered roller bearings unit, TBU. TBUs are used on wheelset of trains. More particulary, in the axlebox. Axleboxes are one of the most safety-critical sub-systems in railway vehicles. Axlebox bearing units are factory prelubricated and fitted with either contacting or non-contacting high performance seals. TBUs consist of two inner rings, one common outer ring, two tapered roller and polymer cage assemblies, a central spacer, grease fill and two sealing systems. In addition, further components like lateral spacers, backing rings and end caps with their locking device can be added to the assembly, based on customer's request. TBUs are ready-to-mount units with a pre-defined axial clearance. The unit design offers bogie and vehicle suppliers and railway operators the advantage of a sealed and pre-lubricated unit that is easy to mount.