ABEC 5 chromium steel caged deep groove ball bearing designed for use in applications with continuous rotation.  These bearings have a heavy duty riveted steel cage.

ABEC Grades: an ABEC code indicates the grade a bearing is made to.  Bearings with higher ABEC grade numbers have tighter manufacturing tolerances for running at higher speeds and a higher cost.  ABEC1 is the lowest grade, ABEC9 is the highest.  This bearing is ABEC5.

Special 6 Months Guarantee:  All Monocrome^TM bearings carry a special guarantee with a 6 month no questions asked replacement.