2PCS 5mm to 8mm Aluminium Plum Flexible Shaft Coupling D20 L25 Connector Flexible Coupler for 3D Printer CNC Machine and Servo Stepped Motor

This is't a 'fix' for issue but certainly helps. The lead screw wobble was massively reduced on my Ender 5 Plus. The quality of the item was good and it was easy to install. Would recommend!

I was experiencing some pretty noticeable z wobble on a custom Cartesian printer I was building. Changing the couplers to these was a night and day solution. My z wobble is completely gone!

I bought these couplers to replace the horrendous ones that came with the Biqu B1SE, as well as on an Ender 3 I had (which to be honest didn't need replacing, but I had a two pack so I threw it on).This style of coupler provides a couple of advantages:-The set screw clamps the coupler around the leadscrew, rather than screws directly into the leadscrew. The stock B1SE coupler has a pair of setscrews that go directly into the leadscrew, and not only did this mean that you can never properly center the leadscrew (because you had to clamp setscrews into it from both sides), but that it also came loose quite often. Nevermind the fact that it can damage the leadscrew itself. The Befenybay couplers required only tightening one set screw and that was it- no fuss and never came loose again. This alone fixed a major pain point of that printer.-The design compensates for minor misalignment. If your leadscrew is extremely bent this probably won't fix any Z-problems you have, but for minor misalignments they can and do work very well. Again, the B1SE has a very long leadscrew which has a very slight offset between the gantry and stepper; this is incredibly obvious because the leadscrew is not parallel to the vertical extrusions and wobble around a lot despite efforts squaring the frame and moving things around to get them perfectly aligned. Installing this coupler, that leadscrew is now parallel and does not show the same level of wobble as before. Printing a test cylindrical tube also shows no z-banding.-It provides an extra level of protection. If something causes your Z-axis to jam or otherwise smash into the bed, the two halves of this coupler actually separates completely allowing the stepper to free spin. In my case, I forgot to remove a tool I used to lock the z-axis into place during maintenance, and the separation of the coupler avoided any additional stress I would have placed on the printer components. I see some comments about this coupler separating prematurely during normal printing, but I hadn't experienced that problem. I can see that if coupler tolerances are bad, this can happen, but also you should be checking to make sure that your gantry is able to move up and down freely (remove the leadscrew and just move it up and down with your arms).Overall, this is a minor improvement over traditional coupler designs. I would not necessarily buy these simply for the sake of an upgrade (as I said, the stock Ender 3 coupler works ok); but if you were already looking to replace couplers for any reason, I think these are a no-brainer to get.

Come da descrizione, prodotto consigliato.

Alles super gelaufen vielen Dank

A amélioré la qualité de mes impressions sur une sovol sv01pro.