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Posted

I need 4 brass bushes for the automatic movement of an Omega 455 (small!), but can't find any from the usual suppliers I use.

The size is 1.00 x 0.2 x 0.22 (dia, hole, ht).  Cousins have the complete upper bridge, but then I still need 2 for the lower. 

I could use jewels in the lower bridge, but the nearest Seitz size is 1.40 x 0.20.

Can anyone help ?

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Posted
5 minutes ago, oldhippy said:

I can only find these. Do you have the means and skill to make them? Have you tried ebay? You should be able to find what you want in a selection. Here is the link to what I found.

https://www.cousinsuk.com/product/watch-bushes-by-size

That was the first place I looked,  and unfortunately, not the right size. 

obsoletewatchandclockparts has a selection, but again, nothing close enough.

Nothing on ebay, but I'll keep watching.

Posted

Would you also disclose how you determined the bushes to be defective. Do you examine and go by side shakes? depthing between gear and pinions?     TIA

Posted
1 hour ago, Nucejoe said:

Would you also disclose how you determined the bushes to be defective. Do you examine and go by side shakes? depthing between gear and pinions?     TIA

When the hole is shaped like this

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  • Thanks 1
Posted

 if you cannot get the right bush then I'd be tempted to increase the hole size and fit a larger bush with the correct hole size and employ friction fit. You can use a broach to do this.

 

Posted
28 minutes ago, Colditz said:

 if you cannot get the right bush then I'd be tempted to increase the hole size and fit a larger bush with the correct hole size and employ friction fit. You can use a broach to do this.

 

I would do that, but I can't find any with a 0.20 mm hole size

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