Ball Bearing Retainer

Without bronze bushing for use with Wedge Chucks NP-100-R or NP-100-A
since Chuck failure is never the cause of spindle eccentricity

100% Inspection of:

Inner diameter for Thrust Bearing 13-79-S mounting
This assures proper pre-load and operation of the bearing

Quality control coupled with state of the art production equipment assures NP-5080-389 is the finest available

Use with Spindle Box Nut NP-639-1