Self-aligning ball bearings. Design: Tapered bore. Bore diameter d: 55mm. Outside diameter D: 120mm. Width B: 29mm. Width outer ring C: 29mm. Shoulder diameter inner ring d1: 77.9mm. Shoulder diameter outer ring D1: 101.4mm. Protrusion of the balls from bearing side faces C1: 0mm. Chamfer dimension r1,2min: 2mm. Tapered bore, taper 1:X: Tapered bore, taper 1:12. Abutment diameter shaft damin: 66mm. Abutment diameter shaft damax: 77mm. Abutment diameter housing Damax: 109mm. Fillet radius ramax: 2mm. Basic dynamic load rating C: 50.7kN. Basic static load rating C0: 18kN. Fatigue load limit Pu: 0.92kN. Reference speed: 11000r/min. Limiting speed: 7500r/min. Calculation factor kr: 0.04. Calculation factor e: 0.23. Calculation factor Y0: 2.8. Calculation factor Y1: 2.7. Calculation factor Y2: 4.2.