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An idler pulley that goes on ball bearings, roughly compatible with the ones that come with Shapeoko.
I wanted to go with a dual-drive on the Y axis, but that required sourcing a second set of idlers (and inventables is out of stock). Luckily, the part isn't that tough to model from scratch. Sized for 16mm OD bearings (size 625) on a 5mm shaft.
2x 625ZZ bearings
1x M5 bolt (length depending on application)
1x shim washer
If you have to deform the print to insert the bearing, increase clearance parameter and try again. I've tried with -ZZ and -RS bearings, and both of them need a little bit of loading before they turn instead of the bearing turning on the bolt. If your bolts are undersized, a layer of masking tape may help.
Shapeoko Idler by thatch is licensed under the BSD License license.
So what's this mean?
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