... life 3.high swiveling accuracy 4.OEM service 6209 bearings low vibration,low noiselow friction moment,long service ... include deep groove ball bearings, miniature thin-wall bearings, and different types of low noise, non-standard and special bearings.1.Bore diameter:Φ ... R16,R168,99502H,499502H16000Series:16001,16002,16003,16005,16007Non-standard bearing series:Clutch bearing,Special purpose bearing,N, ...