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lathe turns very slow HELP

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Forum topic by Karda posted 11-19-2017 11:18 PM 1763 views 0 times favorited 52 replies Add to Favorites Watch
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Karda

807 posts in 386 days


11-19-2017 11:18 PM

I took a piece off the lathe to cut and put it uped the hi speed back on and when I turned the lathe on it barly turned. the motor groans and sometime won’t turn next lower speed the same changed belt back and forth and will work on fourth speed, it is reliable fro third down. I loosened the tail stock to just barly puting pressure on to get to work on fourth won’t work on fith at all even with no wood whats wrong. I have only had the lathe about 9 months. its an HF midi lathe


52 replies so far

View Lazyman's profile

Lazyman

1493 posts in 1220 days


#1 posted 11-20-2017 02:40 AM

Can you turn the headstock by hand (you might need to loosen the belt if it won’t turn by hand).
Do hear or feel any grinding noises when you turn it.

Can you turn the motor shaft by hand?

Does it smell like something is burning?

Is the belt damaged?

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

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Karda

807 posts in 386 days


#2 posted 11-20-2017 03:47 AM

the belts fine I even tuned it on with out tension just motor weight on the belt and it still turned slow. I am roughing on lowest speed and it works fine seems to be an issue i n the higher speeds 3 4 5. motor shaft turns freely, can’t detect any grating some times the piece just won’t move but usually just groans and moves very slow I don’t see any damage to the belt or wheels. However I did notice some black streaks on the raised part of the tread. But that won’t be on the hi speed because tonight is the first time I have used it. I can’t figure it. could the belt be slipping,

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Lazyman

1493 posts in 1220 days


#3 posted 11-20-2017 03:57 AM

Does it actually make a groaning noise? Does it only do this when you have something on the lathe or all the time?

Make sure that the screw that tightens the pulley to the motor shaft is tight.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

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Karda

807 posts in 386 days


#4 posted 11-20-2017 04:01 AM

yea thats how I would describe it, sould like an electric motor that want to go but won’t yes it does it when there is no wood on the lathe. I’ll check the pully screw but why does it work right at slow speed but not hi

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Rick_M

10598 posts in 2213 days


#5 posted 11-20-2017 04:20 AM

You need to do basic troubleshooting. To start, disconnect the belt from the motor and turn it on. If the motor is bad you’ll know right away. If it runs fine then it’s probably lathe bearings. Check that by trying to turn the spindle by hand. Do that and report back.

-- http://thewoodknack.blogspot.com/

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Karda

807 posts in 386 days


#6 posted 11-20-2017 04:56 AM

I checked the motor without the belt it purrs like brand new. this head stock rotates freely with no slop or noise.

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Rick_M

10598 posts in 2213 days


#7 posted 11-20-2017 09:52 AM

So the spindle spins freely and the motor spins freely but when you connect them with the belt, it barely turns. And it was fine one minute, bad the next and it makes a groaning sound. My guess is the motor, unless the belt is binding somewhere.

-- http://thewoodknack.blogspot.com/

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xunil76

31 posts in 297 days


#8 posted 11-20-2017 01:24 PM

did you remember to disengage the parking brake? =)

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GR8HUNTER

2947 posts in 545 days


#9 posted 11-20-2017 04:44 PM

WHAT ABOUT START CAPASITOR ??? :<))

-- Tony Reinholds,Pa. REMEMBER TO ALWAYS HAVE FUN

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Karda

807 posts in 386 days


#10 posted 11-20-2017 06:29 PM

the parking brake is not the issue since the wood turns some time 1st 3 speed work ok i4th is iffy 5 won’t work at all. so the brake can’t be on besides we are talking lathe not car, but if we were it couldn’t be the brake.
I’ll bite what is a CAPASITOR. Could it be the switch

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Rick_M

10598 posts in 2213 days


#11 posted 11-20-2017 09:25 PM

You’ll have to bust out a multimeter and do some troubleshooting since the problem isn’t being obvious. I don’t believe there is enough information for anyone to do anything but guess. It is worth checking the connections inside the switch to make sure everything is tight since that is the only thing you touched. Better yet, check it with a multimeter.

-- http://thewoodknack.blogspot.com/

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Karda

807 posts in 386 days


#12 posted 11-20-2017 10:25 PM

Thanks that is my next step, finding somebody to do that, I could check connection even wire a new switch but when it comes to that kinda thing I haven’t a clue

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Karda

807 posts in 386 days


#13 posted 11-21-2017 06:49 AM

I was searching Utube central machinery wood lathes and found one motor problem a guy had same as mine turned very slow. He changed the capacitor. should that be the problem how would i go about findi ng one, I checked ebay and found a ton of lathe parts but no capacitors

View MrUnix's profile

MrUnix

5973 posts in 2031 days


#14 posted 11-21-2017 07:36 AM

A capacitor is not a lathe part, it’s a motor part. Pull the one you have to find the rating of it. Should be under a cover attached to the motor on the back side of the lathe and should be less than $10. Probably would be a good idea to test it with a multi-meter first to verify it’s bad.

Cheers,
Brad

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

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Karda

807 posts in 386 days


#15 posted 11-21-2017 07:45 AM

ok thanks, now gota find out how to do that

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