X axis stalling at high speeds

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cowpat
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X axis stalling at high speeds

Post by cowpat » Sun 11 Mar , 2012 19:50 pm

Hi
I have a second hand Microrouter that was working fine. Now, the X axis has started stalling on the first 8 inches of travel away from the home position when moved at full speed. If I jog at 2000, it stalls. If I jog at 1500 it moves fine. Once I've cleared the first 8 inches or so, I can jog at the full 2000 speed without problem. Only the X axis is affected.
What might be causing this, and how do I go about rectifying it?
Thanks

Martin
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Re: X axis stalling at high speeds

Post by Martin » Sun 11 Mar , 2012 20:54 pm

1. Remove & clean both nuts.

2. Spray slides with silicone lubericant & leave to dry for 4 hours.

cowpat
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Re: X axis stalling at high speeds

Post by cowpat » Sun 11 Mar , 2012 21:10 pm

Thanks for your reply Martin.
I'm new to CNCing; I've only had it for a few short months. Could you please explain in a little more detail exactly what is involved in "remove and clean both nuts" please? Or refer me to a document/website that give more details.
Thanks in anticipation.

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Re: X axis stalling at high speeds

Post by Denford Admin » Mon 12 Mar , 2012 10:06 am

I'd try the lubing procedure here first:
viewtopic.php?f=37&t=2024

This may be all the problem is - if not then the nuts could need cleaning out.
This manual should help:
viewtopic.php?f=37&t=3658

cowpat
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Re: X axis stalling at high speeds

Post by cowpat » Wed 14 Mar , 2012 20:09 pm

Thank you both for your replies.
The manuals that you referred me to are the reason that I originally joined this forum, but was sadly unable to find them; until you just pointed them out! So thanks.
I've just ordered my silicone lubricant..........

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Re: X axis stalling at high speeds

Post by Denford Admin » Thu 15 Mar , 2012 10:12 am

but was sadly unable to find them; until you just pointed them out! So thanks
No problem, but I've only just posted them :oops:
we normally only post things that are asked for (if we can find them)

Large519
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Re: X axis stalling at high speeds

Post by Large519 » Wed 18 Mar , 2015 1:50 am

Hi,

I am experiencing similar stalling issues, I have tried lubing the ballscrews and slide rails with no joy, when you mention
Denford Admin wrote:if not then the nuts could need cleaning out.
to what nuts are you refering too, is it the thrust coupling??

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Re: X axis stalling at high speeds

Post by Martin » Fri 20 Mar , 2015 5:34 am

Yes. If you remove them one at a time make sure you don't swap them over & check that they are in the same aligment when you refit them as it is a four start thread.

Large519
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Re: X axis stalling at high speeds

Post by Large519 » Fri 27 Mar , 2015 15:18 pm

Hi again,

I have removed and cleaned the nuts and followed the lubing procedure, but I'm still experiencing stalling, even at 1500mm/m, it seems more apparent mid - 3/4 of the x axis travel, are there replacement nuts available if these are worn? Or could it be an issue with the motor?

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