Needle Roller Thrust Bearing Bearing Industry Number 6681 Bearing Design NTA TC Bore Diameter 4 1/8 in Cage Material Alloy Steel Compatible Washer TRA-6681 TRC-6681 TRD-6681 TRF-6681 Lubricant Material Oil Maximum Speed 3 000 RPM Maximum Temperature 250 Degrees F Minimum Temperature -5 Degrees F Outside Diameter 5 1/16 in Overall Width 0.125 in Roller Material Alloy Steel System of Measurement Inch Thrust Bearing Type Thrust Needle Roller and Cage Assembly