The Braun product range includes NBR premium ball bearing units according to the JIS standard (Japanese Industrial Design) for decades now. In 2015 the "NBR Premium ED" series (ISO Standard for european designs) joined the series.
The NBR – NTN – SNR benchmark test
The engineers Professor Sturm and Partner, with headquarter in Dresden,
conducted the following comparative test for a ball bearing from the
trademark „NBR“ to verify that a qualitative statement on their
performance potential was possible.