BCZAMD Upgraded 3D Printer Parts: Adjustable Y-axis Synchronous Belt Stretch and Straighten Tensioner for Ender 3 Pro 3D Printer Review

No instructions but I was able to install from the picture here. Replaced some of the original Ender 3 screws in place of the included bits. All in all, it works great and installation is easy.

Works great on my Ender-3 Pro. Just the bottom. They may contain some instructions. Pictures are helpful here. Be patient when putting it together. The small black metal square piece to adjust was an issue. The screw hole was too small. I had to dig up.

Good fit, easy to adjust. Comes with a plastic roller that moves with the bed at 120°C. You can use the original (split) metal tensioner, but the internal spacers will need to be shortened. Don't get carried away by the tension of the strap, the ends can be pulled back. Apply some Loctite to the screw or it may fail.

Works well when installed. The mounting screws did not line up with the holes, so the screws went in at an angle, which is not good. I took a dremel and cut out the metal to widen the screw hole (closest to the bed) so that it is closer to the inner screw hole (the screw hole closest to the handle).

I was happy to assemble and install it on my printer but unfortunately they sent me an obviously used and damaged item. The main part is covered with a low-quality tint, trying to hide cuts and scratches on the entire surface, someone obviously abused. A chipped spot on the bottom looks like it's starting to rust.

Several reviewers deducted points because the seller didn't provide assembly instructions. I found assembly and installation intuitive. I think anyone with basic mechanical skills should be able to upgrade. After installation, the belt is tensioned by simply turning the knurled screw. Would I buy again if I got another Ender 3 Pro.

Again, like the X-axis belt tensioner, I see people complaining that they aren't pre-assembled. You built a printer! Can't understand some bearing nuts and bolts? This item was very easy to install! Belts are important. It is important to support them. At the same time, you can maintain the tension of the strap by turning the knob. I am very happy with it.

The disadvantage of this product is that it consists of many small parts. But there's no real way to run a continuous tape through something like this without building a device around it or cutting the tape. So I won't blame them for that. However, this Y-axis adjuster does an excellent job. It allows me to adjust the Y-axis belt tension on my Ender 3 Pro and I am completely satisfied with it. worth your money. I appreciate the fact that the wheel is big enough to keep the belt from rubbing…

Unit is well built but uses a gear instead of a smooth idler. Since the stepper motor already has a gear, the belt cannot always fit exactly between the teeth of both gears. If you move the bed back and forth on the Y axis, you can hear and feel it. The bed doesn't turn. My solution was to remove the stock idler and install it in place of the gear. Since the smooth wheel is a bit wider, the small nylon spacers had to be sanded down a bit to make them fit. Very easy to do. A few strokes on a…