Needle Roller Bearing, Bearing Industry Number 81214, Bearing Design RCB, Bore Diameter 1/2 in, Cage Material , Closure Open, Full Complement No, Lubricant Material Grease, Oil, Maximum Speed 17,000 RPM, Maximum Temperature 200 Degrees F, Minimum Temperature -22 Degrees F, Needle Bearing Type Drawn Cup Roller Clutch, Number of Rows Three, Outside Diameter 3/4 in, Overall Width 0.875 in, Ring Material Alloy Steel, Roller Material Alloy Steel, Seal Type Not Applicable