This X axis belt tensioner is a perfect fit, plenty of range and allows me to quickly adjust. The need to adjust is on rare occasion but I like the convenience.

Sizes are not close to standard. And the idler geared pullies are not even even. Both idlers are off center. Leads to the belt being too tight, then too loose. Don’t buy. I’ve had better quality from Aliexpress.

This makes belt tightening SO DARN EASY! stop the headache of layer shifts and Z banding right here and now! Thanks for attention.

I purchased these replacement tensioners for my Ender 3 v2 since the stock plastic parts had started to crack and fail. These are very well built and easy to install. Exactly what I needed. A word of caution for Ender Extender 400 v2 users, the X gantry tensioner may just barely fit and pull the belt tight, this may be due to the different length belt but it doesn't have much room for adjustment.

Before installing this product, I had to re-tension my Ender 3's X axis frequently. It was always a hassle to remove the rightmost pulley and move it outwards. The tensioner was super easy to install and allowed fine adjustment of the belt. If you still have and Ender 3 and haven't purchased the V2, buy this product!

My package arrived without the blind nuts (pictured as part of the included hardware, but not in my bag). No problem, I have plenty of M5 bolts on hand. But of course the holes are for M4. I'm not going through returns again, been doing that a lot lately with too many damaged products. I seem to get unbreakable things in boxes with cushioning, but precision or expensive items sent in plastic wrap envelopes. Anyway, about an hour or so to drill everything and clean off the debris and oil and…

As it was didn't work well or slide well it would pull back crooked etc it turns out the small insert was threaded I think they used the same insert from the x axis version once I drilled the threads out the entire inner section moved freely it works wonderfully now and no belt noise

This is misleading af but here u go.The 2 pack that insinuates that they will fit ender three does not fit the ender three.It will work for 1 axis but not the other.🤬🤬🤬

I've printed a few belt tensioners and find they slower ware down or full break mid print. Fantastic to have a full metal one in place, super solid and a really good upgrade. Would fully recommend as a nice inexpensive upgrade to your printer.Printer: CR-10S

Best purchase ever! I purchase this for my Ender 3 Max and it works great! Super easy install, great fit and works great. Is a must for every 3d printer user.

got them for my ender3 and never knew how to properly tighten the belts on it. got these to fix that. they were easy to assemble and install as well as put a steady tension that hasn't seemed to loosen over time.

A little modification, ie: removal of 4mm from the gantry side of the x axis and these work perfectly for the Longer LK5 Pro

Pretty easy to install. Aluminum construction is better than a printed tensioner in my opinion. I would recommend this upgrade for anyone with an Ender 3 Pro like mine.

I got these to upgrade the non-adjustable and kinda flimsy X and Y axis' on my Longer LK4 pro. The Y tensioner goes on with no changes and is strait forward. The X axis though required some simple modification to make work perfectly. As it arrives the off side contacts the right side gantry frame. So I had to cut approximately 4.8mm off of the end so that it would allow the bolt holes to line up with those already on the X axis frame. I know this part is probably designed for creality style 3d…

I originally had a tensioner I 3d printed. I thought it worked surprisingly well and it did.until it didnt. Woke up to a ruined print:( Decided from then on that for any kind of structural component I would go with an actual metal part. I like the quality of this version its not just stamped sheet metal but an actual beefy part. Also like the wuality of thr toothed sprocket (another reviewer stated rhat havjng two sprokets like this on the same belt would lead to premature earing as they…

I used this belt tensioner for my CR10S printer and after carefully assembling it and installing onto the printer it allows me to immediately adjust the Y axis belt, as necessary. Every printer should have one of these. If you don't have one, get one.

Made from steel and fit perfectly on my ender 3 V1. Added both belt tensioners to my ender 3 V1. Good quality and easy install. Disconnect your belt and loop thru the pulley, then reconnect the belt back to the slot and tighten screws to add some tension. Once screws tight, dial additional tension from the device.

Assembly is rather easy, not sure why they went with small washers between the idler wheel and bracket instead of a true bearing.That little washer was easy to get into place on the 2040 design, but not on the 2020 design.

These replaced some home-printed tensioners off Thingiverse. These are smaller and required no alterations to use. They replace all three belt x-y tensioners on the 5+, the factory ones are deficient in design, mine started bending at an angle after several months of operation. For the 5+, the 2020 version worked out of the package, short side and long side mounted. Best way to mount is to slack the belt, remove one end from the carriage hook, snake that back through the old tensioner, remove…

Works pretty good. Install was a slight annoyance. You have to remove the ball bearing pulley there are 2 washers. Becareful they will fall out and are very small. They are sandwiched in-between the ball bearings. A little grease or tape can help put them back in place.