ARB American Roller Bearing AD5221SM Cylindrical Roller Bearing is a single‑row bearing in ARB’s AD5221 series, designed to provide stable radial support in industrial equipment. It features a bore of 105 mm (4.133 in), an outer diameter of 190 mm (7.480 in), and a width of 2.5625 in (approximately 65.1 mm). The AD5221SM designation identifies a specific size in ARB’s lineup, and the exact cage type can vary by manufacturer, so internal configuration may differ between suppliers. This cylindrical roller bearing size is confirmed by multiple distributors and listings, underscoring its standard 105 mm bore / 190 mm OD / 65 mm wide specification across vendors.
