Hello i newly own a excitech e2 atc cnc router.

My question is when the z exis move upwards their is sound like zzzzzuuuuummm is it normal?

When z exis move down no sound only upwards.

Y exis and x exis also no sound.

Kindly let me know if any one have a excitech e2 atc series cnc router.

Thank u.

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