POLISI3D 2pcs 5mm to 8mm Shaft Coupling 25mm L 20mm OD Aluminum Joint Connector Stepper Motor Leadscrew Flexible Coupler for CR10 CR-10 CR-10S Ender 3 V2 Pro /5, A8 3D Printer

I got these for my Ender 3 Pro which I upgraded to have a dual Z axis. They work good and I have not had any problems with them.

This replaced a 3d printed coupler that could never be tightened enough. With this there is no more slip.

These couplers are of a very poor quality. The first coupler I used cracked when tightening the screw on the 8mm side. The second coupler took an to much torques to be able to adequately grab either the 5mm or 8mm side. Luckily these were cheap and I'm not wasting time sending these back and just ended up in the trash. I would highly recommend looking elsewhere for couplers.

It was a drop in fit for my ender 3, but it did not solve the issue of the z axis binding. I am still working on fine tuning the printer.

Quick and easy installation, used on upgrading Ender 3.

The cheap set screws get stripped out easily and become stuck. Making the whole thing impossible to remove without ruining the lead screw. Also they are way too rigid

Work great

I got these after investing in a second screw. The verdict? A pain to set up. I don't know if my collar's insides were just made too narrow somehow, but my screws can barely get down in them while loosened up, and they have a habit of randomly popping in half, completely ruining a print and- god forbid- maybe even damaging other components of the printer, if not present.

I ordererd these as a test to see how a non rigid coupler would affect the z-axis. My first impression was that they are about as stiff as the original ones, at least in terms of the kind of torque these stepper motors produces. After installing them i noticed that the run-out was significantly increased and also that the two couplers were not even identical in dimension and finish. One has chamfers and one has a fillets it seem. These couplers are hard to recommend even for a cosmetic upgrade.

Acabou com o z-wobble na anycubic i3 mega s

Made my printer smooth and bind free

Acheter pour faire une imprimante 3D, me sert de sécurité pour éviter que la buse s’écrase dans le plateau si un problème de palpeur survient

Ottimo Venditore