X axis making rotational noise

I wanted to attach a video, but I’m restricted as a new member. I hear a rotational noise that I think is coming from the ball screw bearing block on the motor side of the X axis. Is this a known issue?

If it sounds like a creaking, I had the same thing. I found the bearing block to not be in line with the motor shaft. While running the motor I barely loosened the screws holding the bearing block th release the tension. Once the noise went away, I then retightened the screws securing the bearing block. I confirmed the bearing preload was correct at 130kg*cm as per Jason at Sienci and all is quiet now. I had to do the same to my left Y axis motor too but that was due to the bearing preload nut coming loose and I found that during a maintenance check.

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I think it sounds like a creaking. How do you check the bearing preload?

You will only have to check preload if you loosen the bearing block from the gantry. If you’re not 100% certain then you could always open a ticket with Sienci. They’re super helpful and loading pics and videos is required for troubleshooting purposes. They can probably give you step be step on how to correct your issue.

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It turns out the motor coupler had separated and was rubbing on the bearing block. Jason from Sienci saw it in the video I sent in with the ticket. I loosened the screw side of the motor coupler and compressed it back together sand retightened.

Noise gone!!

Thank you!!

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