1. Product Overview 21313D1C3 is double row spherical roller bearing with D1 optimized internal geometry and C3 radial internal clearance. The spherical raceway design provides outstanding self-aligning capability to compensate shaft misalignment. It can bear heavy radial load and bidirectional axial load simultaneously. Specially suitable for equipment with strong vibration, impact load and possible shaft deflection. Widely used on crushers, vibrating screens and mining