[chbot] building CNC router - was Free stepper motors

[Chris Hellyar]

SKF on Annex road.

I just took them out and went in with them in hand and said 'you got 
anything better than these' or words to that effect.  That was 4 years 
or so ago, I think they've moved now?  Anyway, they were a common size.  
Take it apart measure up and go from there.  From memory the better 
quality bearings were nearly $40 for the pair, 1/3rd the value of a new 
Dremel....  Says something about the quality of the tool I suppose.

The other issue mine had was that the bearings were not a snug fit in 
the case, which was more of a problem than the quality of the bearings.

I filled the sides of the old bearing with plasticine and then roughed 
up the seat a little.  The I put a tiny dribble of slow set epoxy in 
there, and pushed the bearing in making sure no epoxy got on the join 
line and screwed it back together for the night.  I repeated that twice, 
once per side of the case to avoid gluing it together. :-)

Cheers, Me.

On 02/07/11 17:00, Robin Gilks wrote:
>> I'll second that.  I'm using a dremel as well, but I re-built it with
>> higher quality bearings which helped a bit.  The stock bearings had
>> almost 0.5mm slop in the, which causes all sorts of problems.
> I'd be interested in where you got better quality bearings. My Dremel is
> now about 10 years old and although hasn't had a lot of use, its always
> had shoddy bearing which tends to break the proper (and brittle) PCB
> drills I use :(
>
> Cheers
>