Needle Roller Bearing Bearing Industry Number 66 Bearing Design B Bore Diameter 3/8 in Cage Material Not Applicable Closure Open Compatible Ring Manufacturer Part Number IRA-3 Full Complement Yes Lubricant Material Oil Maximum Speed 6 900 RPM Maximum Temperature 250 Degrees F Minimum Temperature -5 Degrees F Needle Bearing Type Drawn Cup Needle Roller Bearing Number of Rows One Outside Diameter 9/16 in Overall Width 0.375 in Ring Material Alloy Steel Roller Material Alloy Steel