Rail vehicle bearings operating conditions: high radial and axial loads, strong currents

Railway traction motor bearings:

Railway traction motor bearings must be powerful, environmentally friendly and cost-effective. The weight of the rail vehicle and long maintenance-free operation must be taken into account to ensure high reliability and safety. In addition to reducing the weight of the drive system, rail traction motors are also subject to high radial and axial loads, as well as the possibility of strong currents and high-speed operation. To meet these requirements, NSK has developed insulated bearings with ceramic coatings and high-strength cages.

Cylindrical roller bearings:

Deep groove ball bearings:

Both have proven their performance in rail vehicle traction motors because they are well suited to high speeds and high loads and are easy to install and disassemble.

Insulated traction motor bearings:

Traction motor insulated bearings ceramic coating & traction motor insulated bearings – PPS coating
Traction motor bearings often fail due to damage caused by the passage of current. To prevent electrical corrosion, NSK has developed insulated bearings with ceramic coatings and PPS resin coatings. Both solutions provide high insulation resistance of more than 100Mohms with a breakdown voltage of 4KV.
The high-strength cage is designed to absorb the loads that occur, such as vibration. The spherical roller ends and angled ribs increase the thrust load capacity, and the high quality and long service life guarantee the safety and reliability of the traction motor.

Keller is the agent of SKF, NSK, FAG, TIMKEN railway locomotive bearings. To consult SKF railway locomotive bearings, please contact our sales staff immediately to get the best price