rhino worm gear

I wanted to mount a rhino worm gear to a 20x20 profile and found that the shaft was a bit crooked. It is not parallel to the profile. See the picture, the shaft is off more than 1mm on one side.

The Rhino box should have all sides perpendicular and the shaft does not throw at all when turning, there is no play.
It seems the shaft mount (yellow wheel) may be bent slightly. Is this ever possible or I'm wrong?

Is there any way to fix this? There are some screws, but I don't know if I can loosen them. I unscrewed the motor, but it wouldn't come out. I think the transmission worm was holding it in.

@the_digital_dentist: Still using the rhino on the z-axis, have you had any problems with it?

Still using it. I've never had any problems with it. Just printed this- 638mm tall, 923g of PETG, 1.2mm line width, 0.4mm layers, 15 hours at 40 mm/sec.
I'm not home right now, but I'll take a look at mine when I get back. I don't recall anything yellow on mine.

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Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]

The vase is incredible btw. Very nice.

Edited 1 time(s). Last edit at 10/21/2024 04:05PM by printman.

There's nothing yellow in my Rino. Can you post a picture?

It's far more likely that the shaft is bent than anything in the Rino. Try rolling the shaft on a glass table or stone counter top. If it isn't straight it will be obvious.

The screws on the disc that the shaft goes through are used to adjust for minimal backlash. I wouldn't touch them.

Edited 2 time(s). Last edit at 10/21/2024 11:15PM by the_digital_dentist.

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Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]

By the yellow part, I meant the middle (brass?), see the photo (the first attachment).

I put the shaft next to the aluminum profile and made 2 revolutions. I estimate the distance between the shaft (rod) and the profile to be about 0.3mm. It doesn't look like the rod is too crooked, see the video (the second attachment).

That brass part is probably the hub of the disc gear, so there's no chance that it is bent. The error looks pretty small to me- probably a tolerance of fit issue. I wouldn't worry about it. You're going to put bearings at the ends of the shaft, so put them in the correct positions and mount the shaft. That long shaft will flex a little if it has to.

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Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]