I have acquired a 1990 Ryobi 100 x 150 mm (4" x 6") benchtop linisher. The usual type with a disk and a belt, adjustable horizontal to vertical. The frame is heavy cast iron.
It fell into my hands when a fellow railway builder discarded it because of a 'collapsed tail drum bearing'. He had used it since new in the building of a series of 2-1/2", 3-1/2", 5" and 7-1/4" locomotives. His solution was to purchase a new Ryobi one.

It 'looked' repairable, I cannot resist a bargain (free), so home it went.

It turned into a major job to dismantle it. Impossible access provisions, a Heath Robinson design and problems discovered as each layer was removed.

I test ran it before starting - what a cacophony, its a wonder my mate could still use it at all !

The score so far:
- motor bearings,
- head spindle re-machine and fit bush to the disk,
- head spindle ball bearings,
- tail spindle new shaft,
- tail drum new sleeve bearings,
- several circlips.

The photo shows the initiating cause, with the offending sleeve bearing already bored out.
The spindle is retained (sort of) in the arm and the tail drum rotates on two sleeve bearings.
The spindle diameter is 12 mm and the wear is about 0.7 mm on one side.

My plan is to make a new spindle and fit new sleeves.
Suggestions please on the materials for the tail drum spindle and bearings.
P1020071 Compr.jpg

John
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