Fan bearing lubricant was Re: WD-40 (again)

Jon Elson elson at
Mon Apr 18 10:40:02 CDT 2016

On 04/17/2016 08:43 PM, Noel Chiappa wrote:
>      > From: drlegendre
>      > If they use sleeve bearings, take a close look at the material.. does
>      > it have the sintered look of oil-impregnated bronze (Oilite)?
> It looks like copper, actually; it's quite reddish. (The central pin seems to
> be steel of some sort.) But I'm not familiar with Oilite, so I can't say for
> sure.
Yes, that is a sintered bronze bushing, made by compressing 
powdered bronze in a press.
The pores allow oil to flow from the cotton packing around 
it to the bushing/journal interface.
If you open one of these up, make sure to oil the cotton 
packing to supply oil gradually to the bearing.


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