Tronxy x5s Belt Tensioner by unnefer

Last crawled date: 3 years, 1 month ago

A simple belt tensioner for the Tronxy x5s.
Use it to remove the slack in the x/y belts and improve dimensional accuracy and reduce chances of objects skewing.
Requires:
2x M4 T-Nuts
2x M4 Bolts @ 12mm
1x M5 Bolt @ 40mm
1x M5 Nut (lock nut works best)
2x GT2 type idler pulleys
Note:
I reused the complete bearing/spacer assembly from the Tronxy x5s corner pulley mounts. However, if you still use the stock corner pulleys, there are a bunch of GT2 style idler pulley designs on Thingiverse that you can use. Alternatively, a couple GT2-H 20-teeth idler pulleys from Aliexpress, and some M5 spacers, would also work well.
Directions:
Tighten belts by hand using the adjustments available via the stepper motor mounts.
Temporarily fit the belt tenstioner in place and try the different adjustment spacers until you find the one that removes the remaining slack in the belts and keeps the belts tensioned to your liking.