21317K-C3 Spherical roller bearing C3

21317K-C3 The 21317K-C3 is a spherical roller bearing with an 85mm tapered bore (1:12 taper) and C3 radial internal clearance. The tapered bore design allows secure mounting directly on tapered shafts or adapter sleeves, while the C3 clearance accommodates thermal expansion and misalignment in operating conditions. Spherical roller bearings are self-aligning and designed to handle heavy radial loads and moderate axial loads in both directions. Common applications include industrial gearboxes, mining equipment, paper mills, vibrating machinery, and other heavy-duty equipment where shaft deflection or misalignment may occur.