Insulated cast iron sleeve bearings, such as the 270 mm model for bearing 6230, offer reliable performance in demanding electrical environments. These sleeves feature an approximate outer diameter of 278.3 mm (10.956″) with a tolerance of ±0.05 mm and are available in lengths from 70 mm to 110 mm. Designed to prevent electrical current passage, they protect against fluting and pitting damage. The cast iron construction ensures durability and dimensional stability, while the insulation provides effective electrical isolation. Ideal for applications requiring robust, self-lubricating support with precise fit and long service life.