Needle Roller Bearing Bearing Industry Number 20161 Bearing Design M-1 Bore Diameter 1 1/4 in Cage Material Not Applicable Closure Open Compatible Ring Grainger Part Number 779KE9 Compatible Ring Manufacturer Part Number IR-1616 Full Complement Yes Lubricant Material Grease Oil Maximum Speed 3 500 RPM Maximum Temperature 250 Degrees F Minimum Temperature -4 Degrees F Needle Bearing Type Drawn Cup Needle Roller Bearing Number of Rows One Outside Diameter 1 5/8 in