Self-aligning ball bearings have two rows of balls, a common sphered raceway in the outer ring and two deep uninterrupted raceway grooves in the inner ring. They are available open or sealed. The bearings are insensitive to angular misalignment of the shaft relative to the housing, which can be caused, for example, by shaft deflection. Specifications Design: Tapered bore. Bore diameter d: 40mm. Outside diameter D: 80mm. Width B: 18mm. Width outer ring C: 18mm. Shoulder diameter inner ring d1: 53.85mm. Shoulder diameter outer ring D1: 67.5mm. Protrusion of the balls from bearing side faces C1: 0mm. Chamfer dimension r1,2min: 1.1mm. Tapered bore, taper 1: X: Tapered bore, taper 1: 12. Abutment diameter shaft damin: 47mm. Abutment diameter shaft damax: 53mm. Abutment diameter housing Damax: 73mm. Fillet radius ramax: 1.1mm. Basic dynamic load rating C: 19.9kN. Basic static load rating C0: 7kN. Fatigue load limit Pu: 0.36kN. Reference speed: 18000r/min. Limiting speed: 11000r/min. Calculation factor kr: 0.04. Calculation factor e: 0.22. Calculation factor Y0: 2.8. Calculation factor Y1: 2.9. Calculation factor Y2: 4.5.