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Length of belt for Jet 1442 lathe

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Forum topic by SiRiC posted 07-29-2021 08:42 PM 225 views 0 times favorited 6 replies Add to Favorites Watch
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SiRiC

32 posts in 3237 days


07-29-2021 08:42 PM

Hi,

The belt on my Jet 1442 is slipping badly and I need to get a replacement. I am not in the US so can’t get one quickly from ereplacements parts. I will try to get one locally but does anyone know the original length of the belt?

I know that I can match the old one to a new one but I am not sure how much it has stretched.

Thanks
Steve

-- Measure twice...ummm.. i forget the rest!!


6 replies so far

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tvrgeek

2264 posts in 2865 days


#1 posted 07-29-2021 09:23 PM

What are the markings on the belt?

You don’t want one from Jet anyway as the Chinese belts are, well if I called them total crap, I would be denigrating perfectly good fertilizer.

It is just a V-belt? I bet it is the same one in my Harbor Freight which is a 3L240

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MrUnix

8751 posts in 3415 days


#2 posted 07-29-2021 09:42 PM

Parts listing has it as a 3V250 (Jet P/N JWL1442-141).

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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SiRiC

32 posts in 3237 days


#3 posted 07-29-2021 11:09 PM

Thanks.

Based on the specs of the 3V250 it is 25” long.

-- Measure twice...ummm.. i forget the rest!!

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MrUnix

8751 posts in 3415 days


#4 posted 07-29-2021 11:47 PM

Based on the specs of the 3V250 it is 25” long.
- SiRiC

Yes – but it’s also a narrow V (“3V”) series belt, which has a greater depth to width ratio than a classical V belt, giving it better force distribution and load handling. A 3V belt is 0.38” wide and 0.32” deep. For comparison, a classic A belt is 0.5” wide and 0.31” deep, and a fractional horsepower 3L belt is 0.375” wide and only 0.22” deep. Just order it by belt number (3V250), not length, and you should be fine. They can be found all over the net easily.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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SiRiC

32 posts in 3237 days


#5 posted 07-30-2021 10:46 AM

Thanks Brad.

Will order one but have am working on a project so will have to source something similar locally. Hopefully an auto parts store will have something that will work for now. Should be way better than my current belt which is slipping like crazy as soon as I apply any pressure to the workpiece.

Steve

-- Measure twice...ummm.. i forget the rest!!

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tvrgeek

2264 posts in 2865 days


#6 posted 07-30-2021 11:22 AM

OK, you know the industry number. So any belt supplier should be able to source one.
I suspect you could get away with an L series but the V angle may be the most important.

Now, that is a Reeves drive. Are you sure the spring is working correctly? Even a pretty glazed belt should be under enough tension. Open the cover and see what the tension is like.

As Brad suggests, every belt series has different widths, depths and even V angle. Some are measured as the virtual drive length, some measured on outside circumference. And then Chinese belts not being correct on either as well as not being smooth and round. Unfortunately, Chinese OEMs tend to use odd size belts.

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