X axis stalling at high speeds

cowpat · 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 · 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 · 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.

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 · 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..........

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

we normally only post things that are asked for (if we can find them)

Large519 · 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??

Martin · 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 · 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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