... beairngHk ,BK seriesHK ,RSHK ,2RS seriseBK ,RS seriesNA ,RNA ,NK seriesHF,FC seriesHFL,FCB seriesK series ,AS ,G811 ,WS811NATR,NATV,PP seriesNUTR ... ,NUTR ,X seriesIR ,IR seriesNKIA ,NKIB seriesNeedle bearings are roller bearings with roller that ...