Needle Roller Bearing Bearing Industry Number 88 Bearing Design J Bore Diameter 1/2 in Cage Material Steel Closure Open Compatible Ring Manufacturer Part Number IRA-5 Full Complement No Lubricant Material Grease Oil Maximum Speed 16 000 RPM Grease 25 000 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 11/16 in Overall Width 0.5 in Ring Material Alloy Steel