Planning to replace drive belts on the saw (jerky start up) and want to make sure I get the right size and enough length. The existing belts (off brand automobile v-belts (original?)) are 1/2" on the wide side. My imprecise estimate is that they're each about 24" in total length.
So is 1/2" link belt and buying 8' (3 belts plus the "more is better" principle) about right?
Thanks.
Tom
If it's new, wait.
Cabinet saws are heavy, they dampen a lot of vibration. Belts soften and stretch with use.
If it's not new, go for the link belts.
Barry
Read the label on your existing belt. It should say something like A-52, or A-50. A if for 1/2" and 50 is for 50".
Darrell
Thanks Darrell. I appreciate your response. Regrettably the only markings on the existing belts are
"First Auto Belt", "17-250" then a "20915". probably a part number.
Probably Taiwan markings. I had hoped that someone with a Jet knew the right size.
Regards.
Barry:
thanks for the input. The saw is not "new" as I bought it used, but not VERY used. The prior owner had it in one of those public storage sheds for about 1 yaer before getting tired of paying the fees, so it sat unused in Texas heat for some time. I suspect the belts toook a pretty god "set". They look great, no visible wear. I've run five or six hours on it in the last couple of weeks. The first start up of the day is pretty abrupt, then subsequent starts are smoother as the belts warm up.
I don't mind the expense of sticking link belts on it, just not sure of sizing.
Regards.
Sorry Tom, I still have the belt from Jet Contractor saw that I had as well. It says the same thing. I installed a link belt on it. My guess is the 250 means is 25". It was an 1/2" belt, size A.
Darrell
Why not just take the belt off and measure it? I did for my saw. What I found was that it was a few links too large and then I just removed them.
Thanks. I was more concerned about getting the correct width but concensus now seems to be it's a 1/2" belt. Length is easy as you say, just overbuy!
Regards.
I would be tempted to "rotate" the belts. Take off the tension, rotate one belt a third, rotate the second belt a third the other direction, leave the last belt alone, retension. I think this would cancel out any "set". I also think that a bit of Googling in this group would suggest that abrupt startups are more or less normal anyway.
Larry:
Thanks, I'll try the rotation trick.
Regards.
WW Grainger has a good overview of different sizes of v belts and a = picture with dimensions for each. It begins on page 252 of their online catalog, = their site is
I have used the loop belts for some time and the really do reduce the = transmitted vibrations from the motor you will likely be able to hear it , or rather = not hear it so much. Let me know if you have any other questions about loop belts and I= will do my best to get you an answer. I had to go through the fact finding process for = this stuff some time ago so I may be able to save you some time and effort, hope this = helps. Joe
Joe Brophy CountryTech Computer email: snipped-for-privacy@spiretech.com
Joe:
Thanks for your input. I'll take a look at the Grainger site to see if I can figure out what to order.
Regards.
Tom
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