... Steel plat(NA, TAF, TAF=NK) KT182216 Needle Roller Cages for General Usage :Two types:1, Metal ... please contact this company.Materials:Material for needle roller is GCr15 bearing steel, quench- ... cages (suffixed with TN) and sealing-element material, operating temperature is -300C---+1000C.For general-disposition design of bearings ... in the applied technology of rolling bearings.TLA...Z*TLAM,TA...Z*TAM, ...