The 608ZZ bearing features a bore diameter of 8 mm, an outer diameter of 22 mm, and a width of 7 mm; it is a deep-groove ball bearing equipped with double-sided dust shields. Dimensions Bore diameter (d): 8 mm. Outer diameter (D): 22 mm. Width/Thickness (B): 7 mm. Minimum chamfer (r): 0.3 mm. Load Capacity Dynamic load rating: Approx. 3300 Nā3400 N (approx. 335 kgf). Static load rating: Approx. 1370 Nā1400 N (approx. 140 kgf). Speed Limits Limiting speed (grease lubrication): Approx. 32,000ā34,000 rpm.