# X axis stopped moving

**URL:** <https://forum.onefinitycnc.com/t/x-axis-stopped-moving/27260>\
**Category:** Troubleshooting (X35/X50)\
**Created:** [May 29, 2024, 2:00pm UTC](https://forum.onefinitycnc.com/t/x-axis-stopped-moving/27260 "2024-05-29T14:00:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![johnwillyn](https://avatars.discourse-cdn.com/v4/letter/j/a88e4f/32.png) [@johnwillyn](https://forum.onefinitycnc.com/u/johnwillyn)\
**Post date:** [May 29, 2024, 2:00pm UTC](https://forum.onefinitycnc.com/t/x-axis-stopped-moving/27260/1 "2024-05-29T14:00:13Z")

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Help! My X axis all of the sudden turned up “lame” this morning.

I turned on the machine, and it was homing, but then did not stop, but did not stall at the origin.

After a reboot, the motor seems to whirl, but the axis does not move, and I can move the gantry along the X axis freely.

Any idea what this is or where to start?

Thanks,  
JohnL

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<div class="post-metadata">

**Author:** ![johnwillyn](https://avatars.discourse-cdn.com/v4/letter/j/a88e4f/32.png) [@johnwillyn](https://forum.onefinitycnc.com/u/johnwillyn)\
**Post date:** [May 29, 2024, 2:28pm UTC](https://forum.onefinitycnc.com/t/x-axis-stopped-moving/27260/2 "2024-05-29T14:28:02Z")

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I may have found the issue.

A lose set screw in the ball screw coupling. This video explains how to tighten:

[![](https://us1.discourse-cdn.com/flex022/uploads/onefinitycnc/original/3X/4/6/4671680592be46afc8392c260463f31f0aef6446.jpeg "Tightening the coupler on the ball screw // Updated for quick access holes // Support") ](https://www.youtube.com/watch?v=wXs3e-eecFk)

That might also explain a bunch of gremlins I have been chasing (if this has been loose for a while).