Needle Roller Thrust Bearing Bearing Industry Number 1220 Bearing Design NTA TC Bore Diameter 3/4 in Cage Material Alloy Steel Compatible Washer TRA-1220 TRB-1220 TRC-1220 TRD-1220 TRE-1220 Lubricant Material Oil Maximum Speed 14 000 RPM Maximum Temperature 248 Degrees F Minimum Temperature -22 Degrees F Outside Diameter 1 1/4 in Overall Width 0.078 in Roller Material Alloy Steel System of Measurement Inch Thrust Bearing Type Thrust Needle Roller and Cage Assembly