2-Pack Oldham Coupling Couplers Compatible with BLV and Other 3D Printer Z axis T8 Lead Screw Hotbed (Oldham Coupling)

I purchased a set of these after Kersey Fabrications recommended these. I like the durability of brass, I would prefer bronze (due to them being self-lubricating), but brass seems to be the only other material you can get these in, and with dual leadscrews, they tend to squeak a bit, and you need to clean and re-lube the threads often. POM (Derlin) will not squeak, and is pretty durable. I installed these on an Ender 5 Plus, and they almost eliminated the problem I had where my Z gantry would go out of level. It hasn't entirely eliminated the issue, but I find I need to re-level the gantry far less often, and when I do, it's not off by as large an amount as the previous stock brass leadscrw nuts would end up after every print. I check after every four print jobs or so now, and they'll be out of alignment by 1 or 2mm. not bad. These do not squeak, at all, and I do notice some improvement in print surface finish, but I'm not sure how much is due to the silicone bed columns or these. I would recommend both this product, and the Fystec Silicone Bed leveling columns, using both in tandem will improve print quality, bed stability, as well as reduce the frequency you'll need to manually level the bed and Z gantry. These don't cost a lot, so they are a cheap investment. I've been using them for over a month with no issues, time will tell the longevity of these nuts. These may not last as long as the brass variety but they are cheap enough that they are easily replaced if they get any slop in the threads due to wear. If others are to be believed, these should have a pretty long service life. I'm overall very satisfied.

I got these for my voron trident as the brass ones had a significant amount of play in them, much more then acceptable and I was noticing a lot of layer line problems, I will not they won’t work with the trident as is, but will need some material shaved off the four corners of the z carriage mounts so the spring will fit and also so their is still some play and the lead screw is not bent but now they are all rock solid. Definitely a worthwhile upgrade among many other things

Note: This will not fit the stock lead screw nut for an Ender3. The screw holes to secure the lead nut to the coupling will not line up.This part is awesome just an oversight on my part when ordering.

As everyone in the hobby knows, most leadscrew based motion systems on entry level 3d printers come with brass nuts installed on the leadscrews. In the past, I have replaced my standard brass nuts with anti-backlash nut assemblies that were still made of brass.When I got my Ender 5 plus more than a year ago, I was not satisfied with the way the nuts felt and how much play they had in them.When I went to replace them (a pretty typical and immediate upgrade for me) I found these POM nuts. Since installing them, my Z axis operation has been flawless. These nuts have alot tighter fit than any brass nuts i have used in the past and are dead silent.In addition to the great fit and feel, they are known (and in my experience confirmed) to improve print quality as well as prevent issues with dual z axis rods going out of sync.I enjoyed them so much, I installed some without hesitation on my CR10v3 before I even finished assembly.Do your self a favor, put these on your printer and thank me later.

These work great. My old brass ones became noisy and I knew it was time to change them. These are silent and for perfect.

Arrived and does not come with screws, so you will need to purchase those. Otherwise, it works alright. Havent had any issues with these specifically.Also, does NOT come with any instruction or indication. In case anyone expects this.

This not only made my printer stop howling it also made the z movements more reliable and therefore better layers throughout the print the price is great too. Overall A+

The quality is great and comes with two. However the Anti-backlash Nut does not fit for Voxelab Polaris.

Compared to brass these things are great, the rod will fall out of your hand there's so little resistance on the threads; and the springs for the anti-backlash portion are much harder, resulting in a better effect.Only way to go from here is ball screws or linear rods IMO.

Tutto OK

Ich hatte immer das Problem, dass meine Messinggewinde zu viel Spiel hatten und einerseits das Bett minimal verzögert losgefahren ist und andererseits es Vibrationen auf der Gewindespindel gab. Das ist jetzt durch die Kunststoff Einsätze verschwunden.

Well made with smallest amount of Z movement tolerance.

Se monte sur ma tige T8 pitch 2mm et Lead 4mm ! Par contre attention pièce en plastique donc est ce que ça va tenir dans le temps…