The 125 mm insulated cast iron sleeve bearing for bearing sizes 6016 and 6214 features an approximate outer diameter of 130.3 mm (5.130") with a tolerance of ±0.05 mm (0.002"). Sleeve lengths are available in 40 mm, 50 mm, 60 mm, or 70 mm to suit various applications. The sleeve is made from durable cast iron with an insulating layer to prevent electrical currents from passing through the bearing, reducing the risk of fluting and pitting damage. This insulation enhances bearing life in electric motor applications by protecting against eddy current damage while maintaining robust mechanical support.