Inside Diameter (Bore): 75 mm (2.953 inches) Outside Diameter: 130 mm (5.118 inches) Width: 25 mm (0.984 inches) Closure Type: The "SZ" (or "SZZ") denotes double-sealed or double-shielded, which protects the rolling elements from dust and retains grease. Load Capacity: 14,900 lb. (Dynamic) and 11,000 lb. (Static)Max Speed: Up to 4,800 - 5,600 rpm