Howdy,
On Mon, 3 Nov 2008, David Scheidt wrote:
>> (Also, I looked at the parts list for the Milwaukee portable... It seems to
>> use the same plastic to steel "bearing" setup for the drive wheels as the HF
>> saw uses.)
>>
>
> That may not be as bad as you seem to think. There are lots of
> plastics that are quiet suited for use as plain bearings, even under
> fairly substantial load. They do great things in dirty environments,
> where they're run with no lubrication. Are they solid of one piece of
> plastic, or they a two piece assembly, with an inner core, and an
> outer harder bit?
I don't know about the Milwaukee ones, but the HF ones have a steel
shaft/stud sticking out, with what seems to be a steel inner sleeve which
is a slip fit on the stud, with the drive wheels (plastic) a slip fit on
the steel sleeve.
Mark
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