Needle Roller Bearing Bearing Industry Number 68 Bearing Design J Bore Diameter 3/8 in Cage Material Steel Closure Open Compatible Ring Manufacturer Part Number IRA-3 Full Complement No Lubricant Material Grease Oil Maximum Speed 18 000 RPM Grease 27 000 RPM Oil 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 0.5 in Ring Material Alloy Steel