For more information, please contact customer service NA12581SW Tapered Roller Bearing NA12581SW/K38985 Steel Material bearings NA12581SW is an inch-series tapered roller bearing designed for heavy-load scenarios. It features separable inner ring-roller assembly, strong radial + unidirectional axial load capacity, and precise raceway machining to ensure stable rotation under high-pressure conditions. Sizes 58.74mm ID × 120.65mm OD × 41.28mm Width(equivalent to 2.3125"×4.75"