Needle Roller Bearing Bearing Industry Number 8101 Bearing Design M-1 Bore Diameter 1/2 in Cage Material Not Applicable Closure Open Full Complement Yes Lubricant Material Grease Oil Maximum Speed 5 600 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 11/16 in Overall Width 0.625 in Ring Material Alloy Steel Roller Material Alloy Steel Seal Type Not Applicable