21309 Spherical roller bearing 45x100x25mm

The 21309 is a spherical roller bearing with a 45mm bore diameter, 100mm outer diameter, and 25mm width. Spherical roller bearings feature barrel-shaped rollers running on a common spherical outer ring raceway, providing self-aligning capability to accommodate shaft deflection and misalignment.

This bearing type is commonly used in heavy industrial applications including mining equipment, construction machinery, paper mills, and gearboxes where misalignment compensation and high radial load capacity are required. The self-aligning design helps extend bearing life in applications with shaft bending or housing deformation.