Needle Roller Bearing Bearing Industry Number 405224 Bearing Design HJ Bore Diameter 2 1/2 in Cage Material Steel Closure Open Compatible Ring Manufacturer Part Number IR-314024 IR-324028 Full Complement No Lubricant Material Grease Oil Maximum Speed 4 400 RPM Grease 6 800 RPM Oil Maximum Temperature 248 Degrees F Minimum Temperature -22 Degrees F Needle Bearing Type Heavy-Duty Needle Roller Bearing Number of Rows One Outside Diameter 3 1/4 in Overall Width 1.5 in