Needle Roller Bearing Bearing Industry Number 88 Bearing Design JH Bore Diameter 1/2 in Cage Material Steel Closure Open Full Complement No Lubricant Material Grease Oil Maximum Speed 12 000 RPM Grease 19 000 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 3/4 in Overall Width 0.5 in Ring Material Alloy Steel Roller Material Alloy Steel Seal Type Not Applicable