we can supply deep groove ball bearing 628 Here are brief introduction of our company: Yuyao Bote Bearing is a professional bearing manufacturer. As a qulified bearing supplier we provide high quality standard and special bearings with our over 10 years bearings manufacturer experiences. We provide all series of EMQ level bearings, the best grade is Z4V3. Provide the best quality products with the best services have always been our pursuit. Pls contact with Mr.Wang Jianhua We, Yuyao Bote Bearing, famous as manufacturer all kinds of high quality ball bearings which used in Motors and other high speed runing machines. 628 item is our normal products, the quality level can reach P6 Z4V3. More question or information, plea