... SKF Koyo IKO NTNSeries BK 1012MaterialBearing steel GCr15 and Stainless steelKeeperstainless steel, PTFE, nylonPrecisionP0-P6QualityISO9001:2000 ... RZ,RS,2RS,2RZ,NBall row numberSingle row and double rowApplicationCombined needle roller bearing is widely used ... machine tool, metallurgy machine, textile and printing machine. Payment Terms and DeliveryServiceOEM serviceDeliver timeNormally ready goods in ...