Railway Bearing Manufacturer BT2-8609 C Train Bearing Supplier BT2-8609 BB

The axle bearing is a safety critical component so it is vital that there are zero defects. In order to ensure this, we test our designs train bearings and railway bearings over the equivalent of 600,000 km in our COFRAC certified test centre. During the manufacturing process, we 100% inspect the bearings (dimensional and material using ultrasound and magnet particle inspection) to ensure the full reliability of our products.

Application-specific designs 

High-speed trains For high-speed and very high-speed trains,  SKF offers a TBU design equipped with a  labyrinth seal on both sides. For some  selected applications, a special contacting  seal like the LL E2 seal is used. The TBU designs can be equipped with  impulse wheels and sensors to detect  operating parameters († chapter 7 and chapter 8). Locomotives and multiple units For locomotives with speeds up to  120 km/h, compact TBUs with an LL seal on  both sides are used. This design requires  less space in axial direction compared with a  standard TBU design. In the case of 

compact TBUs, shorter axle journals can be  applied, which results in reduced axle  bending and less wear in the journal/ bearing contact area. For applications in  very cold environments, special seal  material is necessary.  For electrical and diesel multiple units  with speeds up to 160 km/h, compact TBUs  with an LL seal on both sides are used, as  for locomotives, but smaller sizes are  applicable because of lower axleload.  For higher speeds, full bore axleboxes  with a front cover are used. For these  applications, TBUs with labyrinth seals are  used as shown in the previous application. For some application requirements,  improved protection against water ingress is  requested. In this case, a combination of a  labyrinth seal and an LL seal on the wheel  side, where the backing or labyrinth ring is  located, can combine both features with  relative low friction and improved  protection.