Thanks to all for the advice on my spindle rattle. I lowered the
cutter to the limit and put a layer of grease into the shaft then
raised the spline through it; then repeated this cycle a couple of
times. This seemed to reduce the rattle but didn't eliminate it.
I also loosened the belt shield and inserted padding between it and
the head to ensure that this wasn't a source -- this didn't seem to
Then I checked the large LH nut just above the pulley and found that
it was loose - I don't have a wrench to fit so I snugged it up with
some very large pliers. I couldn't apply much torque because I simply
held the pulley with my other hand. However, it eliminated the
rattling!!! I don't know how tight this nut should be -- it would be
easy to lower the head and put a steel plate vertically between a T
slot and the drive slot in the spindle to allow tightening if there
is a torque spec available.
I don't know if this nut is responsible for bearing pre-load but the
bearings on my machine don't seem to generate much heat.
I have been making tool holders for my QCTP from mild steel. This
entailed reducing the raw material thickness over a 1.5x3 area so I
used the big face mill. I took cuts of 0.015 per pass at 375 rpm;
heavier cuts increased the rattling and cuts of 0.005 essentially
eliminated it. The rattling seemed to be due to the interrupted
nature of the cut. I will try heavier cuts now that the rattle
source has been fixed.
I don't understand how the calculation of desired speed = 325 was
done. As a new owner, I guess at speeds and would welcome a more
Again, thanks for all the help. Life is better without the quill
--- In email@example.com, "John" <moran03@e...> wrote:
> I recently got a Homier 03988, the RF30 clone. I have noticed a
> rattling sound from the spindle pulley area since new but recently
> have been using the large face mill which came with the mill and
> that the rattling is much louder when using it.
> There is some play in the spline so I squirted some oil around the
> spline and this stopped the rattling temporarily but it returned
> after a few minutes use.
> I haven't taken the quill apart and would prefer to avoid doing so
> possible. The manual doesn't indicate whether the spline should be
> lubed nor what type of lube to use.
> Does the rattling indicate a serious problem or should I spray some
> white lithium grease into the spline and ignore the rattling?