Needle Roller Thrust Bearing Bearing Industry Number 4052 Bearing Design NTA TC Bore Diameter 2 1/2 in Cage Material Alloy Steel Compatible Washer TRA-4052 TRB-4052 TRC-4052 TRD-4052 Lubricant Material Oil Maximum Speed 3 300 RPM Maximum Temperature 250 Degrees F Minimum Temperature -5 Degrees F Outside Diameter 3 1/4 in Overall Width 0.078 in Roller Material Alloy Steel System of Measurement Inch Thrust Bearing Type Axial Needle Roller Bearings