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Bushing material

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Joe McKean08/03/2021 11:50:07
48 forum posts

The more I read the more confused I seem to get so I thought I would ask the experts amongst you.

I need to order some bronze for bushings to be used on a 3.5 gauge steam locomotive and would like some advice on which grade is best to use, PB 102, Colphos 90, SAE 660, LG2 or maybe there is something else more suitable ?


Chris Evans 608/03/2021 13:35:20
1880 forum posts

I tend to use the leaded bronze for just about everything without problems (660 ?)

old mart08/03/2021 15:45:01
2850 forum posts
181 photos

I agree with the leaded bronze, gunmetal sae660, it machines better than most. It will require lubrication regularly, unlike sintered bronze bushes.

fizzy08/03/2021 16:33:09
1775 forum posts
120 photos

colphos every time for me - machines like brass, very easy to work

Martin Kyte08/03/2021 17:02:01
2313 forum posts
38 photos

On the boiler or for the running gear?

regards Martin

Hopper08/03/2021 23:24:19
5404 forum posts
131 photos

I generally use LG2 or 660 -- i believe they are about the same thing -- for general use.Largely because its what my local supplier keeps in stock. Its leaded so machines easily and makes e a suitable bushing for non-hardened shafts.I'll use a phosphor bronze such as Colphos for making motorcycle small-end con-rod bushes that run on a hardened gudgeon pin. They are old vintage bangers so not massive horsepower so not too critical I suppose.

Edited By Hopper on 08/03/2021 23:25:02

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