Spherical Roller Bearing 1)With the same center as the bearing, the spherically formed outer ring raceway can make self-alignment. Their rolling elements linearly come into contact with the raceways of inner ring and outer ring. The bearings can take great radial load, suitable for heavy machinery used in mining, metallurgical, paper-making and construction, etc. 2)includes: 22205~22240 22308~22338 23022~23040 23122~23140 23218~23240 24024~24040 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