X Axis Stepper Stopped Working

CNC Machines Shapeoko
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Hey there, I was using my shapeoko xxl to flatten a table top, and all of a sudden the x axis stepper stopped giving any resistance. I went through the normal jogging procedures and zeroed my machine, it did the first two passes on the table top, and then stopped pulling my router along the gantry. I tried restarting the machine, however this didn’t change anything. When the machine is on, the Z axis and the Y axis cannot be moved by hand, but the x axis basically moves freely. I checked my connections, and there are no burns or anything along the wires, and if I give a command, the motor tries to go, however it no longer moves the router. Just wondering what I need to do about this, the machine was working beautifully yesterday, and earlier today, but now it is out of commission. Do I need to get a new x axis stepper? I bought the machine in January 2019, so I would assume this is still under warranty, but just wondering if there is anything I can do myself to solve this problem?

Thanks, Regan

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You mention the X motor still runs when commanded ? Could it be that it is just the pulley that is loose, i.e. loose/broken set screws ?

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I second @Julien, it’s a loose pulley. Steppers are pretty robust, rarely fail.

Make sure one of the set screws is on the flat on the stepper shaft.

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Here’s a quick video.

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You guys were definitely correct. Seems that the set screws on the x stepper worked their way out and have gone missing. I’ll need to get some more of those from Carbide 3D. In the meantime I transferred one over from the second y axis and it works perfect.

Thanks for the quick help!

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I think they’re M3… I’d replace them with socket cap screws and some locktite.

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Or, if you don’t need 100, Home Depot actually stocks some smaller socket hex heads

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I actually recommend re-drilling and tapping them with slightly larger (4mm) hex cap screws. IMO 3mm is too small for this.

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Perfect, I’ll get some of those then. Thanks!

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