ABEC explained.
Home PageSkate bearings are rated using the ABEC scale (Annular Bearing Engineering Committee). ABEC 1 being the worse and ABEC 9 being the best. The quality of the steel used in the bearings is not covered by the ABEC scale but is an important consideration when buying bearings, so consult your inline skate stockist first and make sure you are paying for the overall quality.