YFB Machined type needle bearings is a kind of high capacity bearing with small sectional height.It can operate very flexibly even with the light alloy bearing seat due to its high hard outer ring.There are two series:metric & inch series. Both of which are structured with retainer,full needle and sealing types.Besides,the machined type needle roller bearings are divided into two kinds: with inner ring and without inner ring. The center shaft is used as rolling body tray for those without inner rings ,so that its size is more smaller.Machined type needle bearings with inner rings can proved the following series:NKI,NKIS,NA49,NA69,BRI,etc.