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Jet Lathe Motor Burnout?

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Forum topic by jhawkinnc posted 07-18-2011 04:46 PM 2342 views 0 times favorited 6 replies Add to Favorites Watch
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jhawkinnc

111 posts in 2762 days


07-18-2011 04:46 PM

Topic tags/keywords: jet lathe motor burnout

I was turning some cherry candlesticks yesterday on my Jet lathe. In the process of sanding the third one, the motor revolutions slowed WAY down – to the point where I could stop the wood from turning with my hand. And the motor casing was very hot to the touch. I turned off the lathe, unplugged it and waited a few hours to start it up again. Same result – slow turning and hot motor.

It’s a 1/2 HP Jet motor and it’s probably about 8 years old now. No previous problems experienced. I do my best to keep wood chips from accumulating on the casing when turning.

I’ve looked over some online posts this morning and have heard good/bad reviews about rebuilding a motor. I also saw a kit at Penn State that allows you to hook up a variable speed DC motor – but there were reviews about a lack of power on this particular kit.

Any recommendations of what to do? Has anyone had this experience before with a Jet motor?


6 replies so far

View TopamaxSurvivor's profile

TopamaxSurvivor

17664 posts in 3138 days


#1 posted 07-18-2011 04:58 PM

rebuilds are only as good as the person doing the work.

-- Bob in WW ~ "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

View TheDane's profile

TheDane

4997 posts in 3125 days


#2 posted 07-18-2011 06:35 PM

Topa is right … there are a lot of places that rebuild motors, but who knows if they are using quality parts or know what they are doing!

I’d try Jet: For the name of an Authorized Service Center in your area call 1-800-274-6848.

—Gerry

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

View Tennessee's profile

Tennessee

2410 posts in 1976 days


#3 posted 07-18-2011 07:58 PM

Topa is right on. I used to rewind motors for the US Navy Sub fleet. Now those took time and had to be right. But I’d think you might be able to get a replacement for about the same as a rewind job. And with the rewind, you still have the old carcass, and eddy current laminations which may or may not be going bad from the heat. I’d dump the motor.

-- Paul, Tennessee, http://www.tsunamiguitars.com

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SCOTSMAN

5839 posts in 3047 days


#4 posted 07-18-2011 08:17 PM

I don’t like JET stuff my opinion is you have given yourself a wonderful opportunity to buy a new non jet suitable motor 3 phase and also buy an invertor to suit. thats what I did on one of my big lathes or in fact on them all converted now to 3 phase with full speed control(3 phase motors hardly ever go wrong)other than the small Delta pen lathe which I love too. Alistair

-- excuse my typing as I have a form of parkinsons disease

View TopamaxSurvivor's profile

TopamaxSurvivor

17664 posts in 3138 days


#5 posted 07-20-2011 08:18 AM

There is nothing to go wrong with a 3 phase motor other than the bearings if it is not overloaded damaging the insulation. Single phase motors are full of trouble spots.

-- Bob in WW ~ "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

View jhawkinnc's profile

jhawkinnc

111 posts in 2762 days


#6 posted 07-20-2011 02:58 PM

Thanks for your input, guys! I’ve started putting out feelers for getting a new motor and seeing what the costs will be. Hopefully, I’ll be turning again soon.

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