... quality 3.Exported:India,Manila,Singpore 4.Stock Precision gear box bearing gear box bearing Bearing brand:NTN,NSK,ZWZ,SKF,INA,FAG ... ,HRB , SO ON gear box bearing introduction:-- The most representative and widely used bearing-- ... such as SRL ,PS2, Alvania R12 and so on Series gear box bearing series Ring MaterialChrome Steel ,Carbon steel,Stainless steel Tolerance gradeGB/T307 ...