Needle Roller Bearing Bearing Industry Number 1012 Bearing Design J Bore Diameter 5/8 in Cage Material Steel Closure Open Compatible Ring Manufacturer Part Number IR-612-1 Full Complement No Lubricant Material Grease Oil Maximum Speed 13 000 RPM Grease 21 000 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 13/16 in Overall Width 0.75 in Ring Material Alloy Steel