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

This really helps keep the x axis belt tight. Has really improved my print quality.

Installed this on my Ender 3 Pro to allow easier belt adjustment. Took 2 minutes to install and works like a charm!

This is the second one that I have purchased. Work great and you can adjust on the fly. When installing you can take the item apart and install it without messing with the belts. Happy!!! Thanks

Crashed into the bed while its running through the ABL process ONLY when its running through the center row. All others seem to not have an issue.

Supper easy to install makes adding tension to the x axis simple I like the fact the the bearing is groved for the belt. Should help prevent layer shifts

I purchased this tensioner for my Ender 3 V2 after getting a little carried away tightening the Y-axis belt and breaking the stock tensioner. This was a cheaper option than purchasing a OEM part and a much better alternative. The tensioner is all metal and I have zero fear of overtightening and breaking it. I am very happy with the purchase and would recommend it to anyone wanting to upgrade.

The description says it fits the Neptune 2. This absolutely will not fit the Elegoo Neptune 2. It does not even come close to fitting the rails. If you are buying this for the Elegoo Neptune 2 don’t, it won’t fit.

UniTak3D Upgrade Y-axis Belt Tensioner for Ender 3 3D Printer 4020 Aluminum Profile Our Ender 3 really should have just come with this. The stock tensioner is just sad and imprecise. Belt tensions is one of those tuning items that well all need to do, and repeat as the belts age. Installing this was pretty easy. I did it a little differently than normal I didnt want to bother with detaching the belt. When I got the old adjuster off, I had to take off the large bolt with the pulley on it. Not a big deal. I did the same attaching the new one. I took the bolt out, so I could put the pulley behind the belt. When youre setting it up, you have to do some alignments. You want the belt to be traveling down the center of the beam, not on either side. If it goes to the side, its going to cut the belt, and then youll be replacing the whole belt. Its just a matter of loosening the screws on one side, and pulling it left, right, up, or down, as appropriate. Its not a big deal, and something youd have to do with any of them. There is one thing I dont like. The quality of the pulley. The stock one was much nicer quality, and didnt have the grooves. We dont need grooves on the idler, just on the drive pulley. Unfortunately, the stock pulley wont fit into this new tensioner. Im not sure that it enough to lower the score. Lets call it a 4.5 instead of a 5, but Amazon doesnt allow for that kind of granularity. If the manufacturer is reading this, please put a better pulley on there. Someone else may reduce their review score because of it.

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.

Easy to install on my Ender3, and it makes it much easier to maintain proper y-axis belt tension by allowing me to use the screw to tighten or loosen the belt. The entire replacement process took around 5 minutes and print results are just as good as before. Yes, you can print your own parts, but this one is made with metal so you dont have to worry about subjecting the part to too much tension. Affordable and easy upgrade to the stock y-axis belt tensioner.