one or both bearings of my unisaw arbor gave up the ghost . I ordered new
bearings ,spacers ,preload spring etc total was $130+.they wanted $45 for a
set of 3 drive belts, I got them locally for $15 , what a Delta
Typical of any replacement part, be it a small appliance or heavy industrial
equipment. Recently needed a $5 seal for a valve. The machine supplier
that the valve was on could not sell me a rebuild kit, only a $600 valve.
You have to find local sources for stuff like that. I can give you hundreds
My comment is to get a "matched" set of belts. These are cut off the roll next
to each other so they are the same size. Most knowledgeable places that sell
belts can set you up. That way all of them pull the same.
The truth of the matter is even with a matched set of belt
there are typically two belt doing the brunt of the work
while the other (third) is running a wee bit slack.
I have spoken with Unisaw owners who have run just two belts
at a time and they don't notice any change.
Still, I prefer to run with the three (matched set) but
that's just me.
Unless they really load the saw, it's unlikely they would notice any
real difference w/ just one...the multiple belts are there for the times
when one really needs the extra power transmitting capability and very
little of the time is a saw used for such cuts...but when it is, it's
I'd never think of cutting back on such a trivial cost item on my PM
Model 66...a set of quality belts will last almost indefinitely if
they're not mistreated in a average shop. Even in a commercial shop
they'll last <a long time> (TM).
Might I recommend something along the lines of the Gates PowerBand?
The benefits include very closely matched belts, even load distribution,
somewhat quieter operation. I think you'll also see longer belt life ...
based on experience and the fact that the load is evenly distributed ... one
belt can't carry the majority of the load and fail prematurely.
The downside is you can't be a cheap tightwad and only replace the one belt
that broke, knowing full well you will replace another belt in the near
future ... but that's not a technical issue as much as it is a lifestyle
Hint ... if you hear belts screaming when you turn the machine on, you MIGHT
need to consider some sort of soft-start or VFD control. Belt life gets
extended well into the "replace it because it's starting to dry-rot" stage.
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