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Machine Shop and Tool Talk

Central Machinery lathe


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Old 11-12-2008, 11:00:30 PM
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Default Central Machinery lathe

I have this small lathe I got from Habor frieght a couple of years ago. It was working fine up till the other day. Now the motor vibrates, doesn't have much power, and the speed won't change. My guess is the electronic control board. Anybody else have this problem? How do I fix it?
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Old 11-13-2008, 12:50:12 AM
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Default Re: Central Machinery lathe

Does it have a servo driven variable speed pulley arrangement? Your symptoms sound like it may have a sheared key, something is slipping or something has come apart in the drive.
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Old 11-13-2008, 10:20:34 PM
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Default Re: Central Machinery lathe

The gears all look good. I even disengaged everything. It is direct drive with an electronic control board. I wondered if maybe a gear or something was bad, but I would think even if that was the case I should still be able to veri the speed by the knob, (a rheostat).
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Old 11-13-2008, 11:12:42 PM
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Default Re: Central Machinery lathe

2 complaints I've heard about the chinese lathes have been motors going bad, or contactors (solenoids) going bad. It sounds like you've got one or both of those problems. From what I've read, a bad motor is a blessing in disguise, and many people take that opportunity to upgrade to a 3 phase motor and variable frequency drive (VFD) controller. Good luck on the repairs.
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