Anet A8 Improved Y-belt Tensioner

by freemark, published

Anet A8 Improved Y-belt Tensioner by freemark Jul 22, 2016



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This Y-belt tensioner is designed to keep the belt pulley in the same position as the original non-adjusting mounting bracket, in order to maintain the correct geometry along the Y axis. There are two adjusting screws to allow proper alignment of the belt and prevent lateral movement. Printing this with a brim is recommended.

See this link for a pad, designed by ClydeFrog04, that fits under this tensioner and protects the acrylic from being marred by the screws: http://www.thingiverse.com/thing:2073723

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Will a 16 teeth GT2 pulley fit in this design?

Thanks a lot!

I'll answer my own question with a yes!

Just printed it and the GT2 pulley slides right in!

Thank you for uploading your wonderful design. I would like it print it but on the first try my printer knocked down one of the pillar at 80% completion. So now I'm wondering if you could upload the 2 pieces separately as I already have the flat screw plate and would not like to print it again. Thanks!!

Thank you for posting this essential. Not an easy belt to draw hand tight and better!! I have certainly taken probably a record 8 hrs so far to get this to remain in the vertical mode. For some reason I forgot to insert the Brim within Cura. Sure you guys can have a laugh, I am new. But the small legs that make the "U" get knocked over as the radius structure joins up. So disappointing. I am sure I have more and bigger to come, but I am trying to get the upgrades done and iron out the deficiencies of the Anet A8 and keep it busy.
I really ought to connect an hour meter to this thing as it is going to circle the globe so-to-speak :-)

Did it come out ok with the brim?

works as designed,

Thank you for making and sharing.

Beautiful part, printed perfectly the first try (even with my crappy X tension issues) and worked exactly as intended and my bed moves much more smoothly now.

in what orientation did you print this, is there a way to reduce support material used?

I printed it upright just as it's shown in the stl file image above. Supports are not necessary, just use a brim large enough to encompass the entire larger piece.

Cheers Mate :)

Resolution and infill?

Res .2mm and 25% infill should work fine.

so does this let you adjust the tightness or is it just the stock one with a different shape?

It's purpose is to adjust the belt tension.

Hi, did you loose any travel with this ??

Thank you for the info..

Comments deleted.

What bolts and screws did you personally use in this project?

Two M4 x 18mm, each with 2 nuts. The pulley was mounted with the original screw that came with the printer.