What is an ABEC Rating?
Precision ball bearings are manufactured to standards established by the Annular Bearing Engineers Committee (ABEC) of the American Bearing Manufacturers Association (ABMA). The ABEC and ISO bearing standards are primarily concerned with bearing tolerances. The tolerance is the permissible deviation from a specified value of a structural dimension. The higher the ABEC rating the closer the part is to being dimensionally perfect. For more information about ABEC ratings see info.