roller bearing Meterial:bearing steel GCR15 Brand:SQT,NTN,NSK Application:crankshaft,swing and travel motor,swing shaf bearing steel Chemical ingredients: Steel No. Sepc. Chemical IngredientsGcr15AISI 52100 C Cr Sr Mn P S0.95-1.051.30-1.650.15-0.350.2-0.4less than0.027 less thanCylindrical Roller BearingDimensionsmmBasic Load RatingsDesignationWeightSpeed limited(r/min) ...