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

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.

I installed this on a Longer LK1 (Alfawise U20) and is does exactly what I wanted it to. This part is well designed and manufactured with precision. Surfaces are smooth and square with no burrs and the bearing is quality. It also ships with quality fasteners/hardware.... not the cheap, mass produced stuff that usually comes with attachment pieces and easily strips or elongates. Purchase with confidence - you wont be disappointed.

This worked quite nicely in my CR-10. Its great being able to just turn a knob instead of pull on something and tighten bolts. If you know, you know.

Great fit and easy install on my CR10 Max. This tensioner is a must for all Creality 3d printers.

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.

Not really sure if I can find a better one. The only problem is that they get loose over LONG periods of time (like I have to tighten once a month of continuous use). Otherwise, its helped my prints dramatically. Just wish I could lock it in once I got the tightness correct.

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 have 3 Standard Ender3s and this is a much needed upgrade. The price is low enough I am not sure why anyone wouldnt pick this up. It does not come with wrenches but the kit you got with your printer has everything you need. Once I found the sizes I need I uninstalled previous tension-er and had this upgrade installed in a little under 3 minutes for each of the 3 printers. All metal design gives a good quality feel. The knob lets me decide how tight I need to belt to be.

Simple to install and works great to keep the right amount of tension on my Ender 3.

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.