Standard Specifications & Options: Sizes: Available in standard deep groove ball bearing series (e.g., 60-series, 62-series, 63-series) with bore diameters from small precision sizes up to common industrial dimensions. Precision Grades: Offered in standard ABEC 1 (P0) up to higher precision grades (ABEC 3/P6, ABEC 5/P5) for applications requiring exceptional running accuracy. Clearance: Standard radial clearance (C0, CN) is available; other clearance groups can be specified. Seals/Shields: Options include open, steel shields (ZZ), or rubber seals (RS, 2RS) for contamination protection, though the choice of seal must account for the potential for higher speeds.