... 51300,51400,DAC,BC, etc. Ring MaterialChrome Steel ,Carbon steel,Stainless steel Tolerance gradeGB/T307.1-205 ID Size ... Ball Bearing 6088 Tianjin HuaJingRui bearing Co., LTD mainly Swedish SKF bearing, Japan NSK bearings, NTN bearing, KOYO bearing, IKO bearing, Germany FAG bearing, INA bearing ... culture, actively explore the market, to provide for all users from products introduced to this technology ...