The 300 mm insulated cast iron sleeve bearing (bearing 6328) features an approximate outer diameter of 309 mm (12.165 inches) with a tolerance of ±0.05 mm (0.002 inches) and is designed for oversized applications. Made from durable cast iron, this sleeve bearing provides electrical insulation to prevent current flow through the bearing, reducing fluting and pitting damage. It typically has a sleeve length around 70 mm and is suited for heavy-duty bearing housings requiring robust mechanical support and electrical isolation. This component is ideal for repair and maintenance in industrial machinery where precise dimensions and insulation are critical.