New deep groove ball bearings boost efficiency in electric motors
03 October 2019 | Web Article Number: ME201916263
THE low energy consumption of electric drives is an important target in many industrial applications, and rolling bearings can play a role in delivering this ambition.
That’s according to NSK, which claims its new series of deep groove ball bearings generates up to 80% less energy loss, a factor that has a positive effect on the energy efficiency of electric motors.
“Before this development, NSK conducted an intensive investigation into the parameters influencing the energy loss of bearings, drawing a number of interesting conclusions,” the company said in a statement.
“As a result, the new bearing series uses new grease that has been specially developed for friction reduction, while the grease filling level has also been optimised.”
The company said that in comparison with a conventional deep groove ball bearing, the new NSK high-efficiency bearings demonstrate 60% less friction when using a steel cage. If a plastic cage is used, internal friction is reduced even further, by almost 80%. As a further benefit, service life with the new grease is increased by a factor of 2.7.