... 3.Quality:GCR15 4.ISO 9001:2008 2211/2211K Aligning Ball Bearing DimensionMAX INNER Size:55mmOutside Diameter:100mmWidth:25mmWeight:2.8KGS1.Material ... : Open ball bearing, Z, ZZ, RS, 2RS, 2RZ 7. Internal clearance: C2, C3, C4 ,C5 DESIGN CLASSIFICATION1.Double row spherical roller bearing and single ... (fewer wear,lower operation temperture) Super Quality Good Price Aligning Ball Bearing 2211