# Touch probe not moving when probing X axis

**URL:** <https://forum.onefinitycnc.com/t/touch-probe-not-moving-when-probing-x-axis/12245>\
**Category:** Troubleshooting (X35/X50)\
**Created:** [April 4, 2022, 6:58pm UTC](https://forum.onefinitycnc.com/t/touch-probe-not-moving-when-probing-x-axis/12245 "2022-04-04T18:58:37Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![InNox](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/innox/32/7815_2.png) [@InNox](https://forum.onefinitycnc.com/u/InNox)\
**Post date:** [April 4, 2022, 6:58pm UTC](https://forum.onefinitycnc.com/t/touch-probe-not-moving-when-probing-x-axis/12245/1 "2022-04-04T18:58:37Z")

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Can anyone tell me what is going on here and why the machine is not moving along the x axis to probe?

Previously I have had the touch probe working and the machine will home along the x axis so don’t believe there is a mechanical issue with movement in general.

> **[Onefinity Touch Probe X axis issue](https://www.youtube.com/shorts/dUjjlwBylrg?feature=share)**

Edit: The probe seems to work if situated closer to the centre of the work area, but thinking I should be able to home anywhere in the work area?

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**Author:** ![WaywardWoodworker](https://avatars.discourse-cdn.com/v4/letter/w/e79b87/32.png) [@WaywardWoodworker](https://forum.onefinitycnc.com/u/WaywardWoodworker)\
**Post date:** [April 4, 2022, 8:38pm UTC](https://forum.onefinitycnc.com/t/touch-probe-not-moving-when-probing-x-axis/12245/2 "2022-04-04T20:38:14Z")

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I would suspect the set screw/grub screw in the coupler between the stepper motor and the ball screw is loose.

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**Author:** ![InNox](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/innox/32/7815_2.png) [@InNox](https://forum.onefinitycnc.com/u/InNox)\
**Post date:** [April 4, 2022, 8:45pm UTC](https://forum.onefinitycnc.com/t/touch-probe-not-moving-when-probing-x-axis/12245/3 "2022-04-04T20:45:48Z")

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Would this only affect probing though? The machine will travel the full length of the x axis under manual control

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**Author:** ![WaywardWoodworker](https://avatars.discourse-cdn.com/v4/letter/w/e79b87/32.png) [@WaywardWoodworker](https://forum.onefinitycnc.com/u/WaywardWoodworker)\
**Post date:** [April 4, 2022, 8:52pm UTC](https://forum.onefinitycnc.com/t/touch-probe-not-moving-when-probing-x-axis/12245/4 "2022-04-04T20:52:09Z")

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From the video it appears the X value is changing yet it’s not moving so I’d suspect there is a mechanical issue somewhere.

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**Author:** ![InNox](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/innox/32/7815_2.png) [@InNox](https://forum.onefinitycnc.com/u/InNox)\
**Post date:** [April 4, 2022, 10:16pm UTC](https://forum.onefinitycnc.com/t/touch-probe-not-moving-when-probing-x-axis/12245/5 "2022-04-04T22:16:09Z")

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Screws were tight 😕

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**Author:** ![Carlos08](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/carlos08/32/21725_2.png) [@Carlos08](https://forum.onefinitycnc.com/u/Carlos08)\
**Post date:** [December 15, 2022, 12:02am UTC](https://forum.onefinitycnc.com/t/touch-probe-not-moving-when-probing-x-axis/12245/6 "2022-12-15T00:02:47Z")

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Thanks a lot this worked for me.