... coefficient of friction 3 High quality HRB Bearing Itme No M249749/M249710SampleFreeDeilivery timeWithin 15 daysMaterialBearing ... +carton , individual box packing or industrial standard packingApplicationautomobiles, rolling mill, mining, metallurgical, plastic machinery, etc. Number of ... rowOr moreOther types we supplyDeep groove ball bearing , self-aligning ball bearings, cylindrical roller bearings ...