21318K-C3 Spherical roller bearing C3

21318K-C3 The 21318K-C3 is a spherical roller bearing with a 90mm tapered bore (1:12 taper) and C3 radial internal clearance. The tapered bore design allows for direct mounting on tapered shafts or adapter sleeves, while the C3 clearance provides greater operating clearance than normal to accommodate thermal expansion or misalignment. 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, construction machinery, paper mills, and heavy-duty conveyor systems where shaft deflection or misalignment is expected.