Deep groove ball bearings, double row. Shoulder diameter inner ring d1: 21.5mm. Shoulder diameter outer ring D1: 29mm. Chamfer dimension outer ring r1,2min: 0.6mm. Abutment diameter shaft damming: 19.2mm. Abutment diameter housing Amax: 30.8mm. Fillet radius remix: 0.6mm. Basic dynamic load rating C: 11.9kN. Basic static load rating C0: 7.5kN. Fatigue load limit Pu: 0.32kN. Reference speed: 32000r/min. Limiting speed: 17000r/min. Calculation factor minimum radial load or: 0.05. Calculation factor f0: 13.