Greased aluminum/aluminum bearing surface - poor design
Axis lock & ID sleeve bearing (anodized)
Not much room for bearings
Machined & unmachined surfaces are not concentric
Cleaned up
Large diameter will be machined to 20mm
25mmOD x 20mmID x 4mm Bearings
Perfect fit in the bore
Bore is 25..04mm
Zeroed and ready to machine
Machining the new bearing surface
Almost there, 20mm target
Exposed screws machined flat
Bearings & spacers installed
VIDEO - Free moving with ~10 lb load
VIDEO
Modified unit indiscernible from original