The 100 mm insulated cast iron sleeve bearing designed for bearing numbers 6013, 6211, and 6309 features a durable Class 40 grey cast iron construction with an approximate outer diameter of 105–106 mm (4.134–4.174 inches) and a length ranging from 40 to 50 mm. This sleeve bearing provides a precise fit with a tolerance of ±0.05 mm (±0.002 inches), ensuring reliable housing repair and alignment. It supports deep groove ball bearings with bore sizes around 65 mm to 70 mm, offering robust performance in heavy-duty applications requiring low friction and high-speed capability. The sleeve is ideal for extending bearing housing life and maintaining optimal bearing operation.