The Craftmans Shop > New from Old
Dore Westbury Mk1 Mill Restoration, finishing and one or two mods.
awemawson:
Also called 'tolerance sleeves' - sad how these things come back to you in dribs and drabs :clap:
Canobi:
I'll have to come up with a plan b for bearing shims as McMaster don't do them in the size I need. Largest imperial they have is 1.1/8" and my bearings are 2.24" OD.
vtsteam:
Canobi, what is the difference in diameters that you have?
Seems to me if they are the right thickness, and uniform in thickness, that multiple shims are no less secure than a corrugated whatzit.
The main thing is that the bearing is central to the quill and aligned with its couterpart, that its face hits a proper register, that the outer ring won't spin, that it is supported enough not to distort from pressure of the rollers.
I don't see anything wrong with your multiple shim idea, except that I would suggest more of them so the gaps between them are minimal -- so the rollers won't distort the outer ring.
The face register should align the bearing (if proper itself), the shims if sized right and uniform thickness should prevent spinning and should keep the bearing centrally located.
Canobi:
--- Quote from: vtsteam on June 30, 2018, 07:05:01 PM ---Canobi, what is the difference in diameters that you have?
Seems to me if they are the right thickness, and uniform in thickness, that multiple shims are no less secure than a corrugated whatzit.
The main thing is that the bearing is central to the quill and aligned with its couterpart, that its face hits a proper register, that the outer ring won't spin, that it is supported enough not to distort from pressure of the rollers.
I don't see anything wrong with your multiple shim idea, except that I would suggest more of them so the gaps between them are minimal -- so the rollers won't distort the outer ring.
The face register should align the bearing (if proper itself), the shims if sized right and uniform thickness should prevent spinning and should keep the bearing centrally located.
--- End quote ---
The OD of old bearings is 2.25", new ones are 2.24".
awemawson:
If they are sold as 2.25" bearings and are in fact 10 thou under size they are faulty and should be replaced by your supplier
I'd assumed that it was the housing that was the problem. Bearing outer diameters should be within tenths of a thou of nominal
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