Needle Roller Bearing, Bearing Industry Number 2420, Bearing Design B, Bore Diameter 1 1/2 in, Cage Material Not Applicable, Closure Open, Compatible Ring Manufacturer Part Number IR-1920, Full Complement Yes, Lubricant Material Oil, Maximum Speed 4,300 RPM, Maximum Temperature 248 Degrees F, Minimum Temperature -22 Degrees F, Needle Bearing Type Drawn Cup Needle Roller Bearing, Number of Rows One, Outside Diameter 1 7/8 in, Overall Width 1.25 in, Ring Material Alloy Steel