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

[Jon Elson]

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.

Jon