21309K-C3 Spherical roller bearing C3

The 21309K-C3 is a spherical roller bearing with a 45 mm tapered bore (1:12 taper) and C3 radial internal clearance. The tapered bore design allows for mounting directly on tapered shafts or adapter sleeves, while the C3 clearance accommodates thermal expansion in applications with higher operating temperatures or interference fits.

Spherical roller bearings are self-aligning and designed to accommodate heavy radial loads and moderate axial loads in both directions. Common applications include industrial gearboxes, mining equipment, paper mills, and heavy machinery where shaft deflection or misalignment may occur during operation.