Needle Roller Bearing, Bearing Industry Number 1612, Bearing Design B, Bore Diameter 1 in, Cage Material Not Applicable, Closure Open, Compatible Ring Grainger Part Number 779KE6, Compatible Ring Manufacturer Part Number IR-1212, 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 1/4 in, Overall Width 0.75 in