NACHI Ball Screw Support Bearing 20TAB04UP4, Single, Flush Ground, 20MM Bore, 47MM OD
These bearings are designed to support ball screws that are used as actuators of high precision and high speed machines
Their stiffness is much greater than conventional angular contact ball bearings as these have a greater number of balls
These bearings are supplied with a pre-set preload to eliminate complicated adjustment and torque measurement
Flush ground bearings (suffix DU or U) can be used in DB (back to back), DF (face to face) or DT (tandem) assembly
NOTE - Load Ratings
When single flush ground bearing (suffix U) is assembled in duplex and axial load is applied to 2 rows or 3 rows, load rating listed is to be multiplied by 1.62 or 2.16 respectively for Dynamic and multiplied by 2 or 3 respectively for Axial Limiting Load.
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