Material:bearing steel bearing type:roller bearing size:28*35*25 Application:road roller 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 than 0.025application:autobike, electric lmplements, automobile, engineering machinery,textile machinery,etc needle roller bearings