Double row self-aligning ball bearings have a sphere raceway in the outer ring and a double raceway in the inner ring. This feature gives the bearings their self-aligning property, permitting angular misalignment of the shaft relative to the housing. They are therefore particularly suitable for applications where misalignment can arise from errors in mounting or from shaft deflection. Double row self-aligning ball bearings are mainly used to carry radial loads and light axial loads, but can't carry pure axial loads.
TIK Bearing can provide both cylindrical and tapered bore (bearing no. with suffix K) types.

Features
The inner ring has two raceways and the outer ring has a single spherical raceway with its center of curvature coincident with the bearing axis; therefore, the axis of the inner ring, balls, and cage can deflect to some extent around the bearing center. Consequently, minor angular misalignment of the shaft and housing caused by machining or mounting error is automatically corrected.
This type of bearing often has a tapered bore for mounting using an adapter sleeve.