UniTak3D Ender 3 Pro Belt Tensioner Kit 2020 X-axis and 2040 Profile Y-axis Upgrades for Creality Ender 3 Pro 3D Printer

Works like a charm, much better than the junk ender ones

These should be on every 3d printer. A much better way to make sure your belts are factory tight before every print. These are made very nicely out of solid machined aluminum with a nice powder coat paint job. All taps are cut nicely and the pullies are on nice smooth bearings. Easy to install on my SV01. A+

The stock belt tension system led a lot to be desired. I was going to print a tensioner but wasn’t sure how well it would hold up. Plus I really wanted a cogged idle wheel for the printer. I had seen these from a post earlier and figured I’d give it a try. These work great. Took a little to get onto my printer but it has made a big difference in my print quality. If I get another printer I’ll be looking for another set for that printer.

Great tensioners, good construction and proper spec gt2 pulleys.HAS ISSUES WITH UNITAK3D Y AXIS LINEAR RAIL CONVERSION KIT FOR ENDER 3 AND ANY DUAL Y RAIL LINEAR RAIL KITS! BUYER BEWARE!

I have two of these kits installed on my printers. They are a huge upgrade over the stock belt tensioners and are aesthetically pleasing as well. I got this kit because they both match each other. Other kits have a nice X-axis tensioner and the Y-axis is a stamped steel bracket. Good job UniTak3D!

Something about trying to keep tension on a pulley while tightening screws never seemed right to me. And the stock pulley for the x-axis always seems to bend a little under tension. This replacement very cleverly braces itself against the plate on the back side of the bar, and the tensioner supports the pulley on both sides. It is an excellent solution. The Y-axis benefits from this arrangement as well. The only difficulty, which is true of all T-nut attachments, is in making sure the t-nuts are turned all the way before tightening them. These come complete with all the hardware, so you don't have to cannibalize the t-nuts and screws from the old tensioners.

So much better than prying with a screwdriver.

These belt tensioners fit my lk5 pro without any modification. I needed to replace the x and y belts to accommodate them, but I knew it going in and purchased the belts in the same order. A fine upgrade for the price!