Cylindrical Roller Bearing 1??his type of bearings is separable. As their rollers linearly come into contact with inner ring and outer ring with less coefficient of friction, these bearings have very good capacity of radial load, suitable for electric motors, automobiles, transmission shafts, gear shafts and so on. Double row cylindrical roller bearings are good at the spindles of machine tools. 2??U209 SERIES NF209SERIES 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