Deep Groove Ball Bearing 1)Deep Groove Ball Bearing mainly take radial load as well as take moderate axial load. With less coefficient of triction,high limiting speed, large size rang and colorful combination of structure; they are suitable for tractors, motors,automobiles, motorcycles, and other common machinery, as a widely used type of bearings in machinery industry 2)includes: 16001~16020(zz or 2rs) 6000~6020(zz or 2rs) 6200~6220(zz or 2rs) 6300~6315(zz or 2rs) 3)Gcr 15 (AISI 52100/DIN 100Cr6/JIS SUJ2)chrome steel material 4)Tolerance standard: GB/T307(ISO492) 5)Hardness: HRC60-HRC65 6)ISO9001 certificate 7)single color box or tube or industrial paper packing Contact: Ms.Chunjie Zhang(Lisa) Liaocheng Jingtong Bearing CO.,LTD Tel: 0086-13184175555 Fax: 0086-635-2111050