UniTak3D Ender 3 V2 Y-axis Belt Tensioner Upgrade for Creality Ender 3 V2 Ender 3 Pro CR10 Mega Zero 2.0 Flashforge-Aquila AURORA-A5X 3D Printer 2040 Profile

If the carriage inside width was just smidge wider the problem I experienced could be avoided, and this thing could be hacked to use the original bearings in the Creality tensioner mechanism. For me, the pulley itself is rubbing on the tension carriage adding dragging and screeching. If the part were better designed, they could give some relief to hold the center of the bearing in place yet leave clearance for the pulley. Or the whole center part of the carriage could be made wider and some thing washers inserted to create the clearance. And this should really be using a shoulder bolt instead of a fully threaded M5 part so the bearings are riding on a shaft instead of undersized thread.

Great tensioner, well built. As someone mentioned, if your bed size is set to 235mm, the Y carriage will hit the tensioner, not a problem for me since I upgraded to linear rails.

It was a breeze to install and made tightening the x belt super easy. 10/10 would recommend.

This is very good for the price, highly recommend this product

Replaced a printed (PLA) tensioner on my CR-10 mini that came apart after a year or two of wear and tear. While I like printing mods in general, this is just more solid, easy to adjust and fits the rail and belt perfectly. The old printed mod was a little off and had some wiggle that led to some annoying belt rubbing from time to time.

This has made getting the belt on my Ender 3 super easy and fast. For my ender 3 I did not have to re use any of the standard hardware which many people said they had to. I did not and I did not have to take the belt off to install this... I did have to take apart the entire part but it is straight forward and easy to understand.

I bought an Anycubic Chiron and was stunned that it does not have axis tensioners on the belts. My X axis out of the box was so loose that it would not even hold steps at all. I broke the zip ties and closed the belt one tooth length, and that helped but still wasn’t enough, there was a lot of backlash in the X axis moves. Then, went another tooth and while that was a lot better still, it wasn’t right. Then I bought and installed this tensioner and it bolted right up the the Chiron. The only modification I had to do is the Chiron uses one of the bolts from the old pulley wheel mount as it’s X-axis homing stop, and this does not accommodate for that. I originally tried just putting in a longer bolt so that it would still work almost as factory, but the bolt was too far left from where the factory X home stop is and so the carriage hit the upright before hitting the stop. So to get the homing stop location back you need to add another bolt to the aluminum extrusion next to this tensioner but that is easy to do.

Works very well. Easy to install and super durable. Should be the gold standard for 3d printers to have pre-installed.

First impressions of this item is that it is very solid and has a very polished finish. Installation was was very simple on ender 3v2. Loosen the old belt, remove old tensioner, bolt on new tensioner with included T nuts, attach belt and tighten. I was able to reuse my existing belt. So far I am happy with the quality of this item.

Its built nice, but it does NOT work on the ender 3 X belt. The pulley is too small and the belt will run against the 2020 extrusion. Now I have to order a bigger pulley to make it work. What a waste.