The 685ZZ bearing is a Thin section bearing with an inner diameter of 6 mm , an outer diameter of 13 mm, a width of 5 mm. It typically uses ABEC1 ABEC3 ABEC5 grade precision tolerances and 686 OPEN 686ZZ 686-2RS 686-2RZ type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.