Specifications 1.Well perfomance and anti-corrosive 2.Can exchange the part of bearings 3.High precision and durability Model NumberUCP208Brand NameBETTON,SKF,NSKBore Size40 (mm)Outside Diameter49.2(mm)width186(mm)Seals Type MaterialRing Material Chrome Steel ,Carbon steel,Stainless steelCage material steel ClearanceC0,C2,C3VibrationZv1,Zv2 and Zv3Precision RatingP0,P6,P5GreeseAs you requirement, ...