Befenybay 6PCS Diameter 8mm Black TR8x4 Lead Screw Nut for CNC and 3D Printer Parts (Size: Tr8x4)

I used these to replace the worn brass lead screw nuts on my Anycubic Mega X. They are perfect fits, and a little quieter than the originals. I do recommend that you put some lube on the lead screws to minimize wear, but that would be for nay lead screw nuts.

Sauber verarbeitet, Gewinde wie beschrieben TR8x4

Wichtig Maße beachten der Durchmesser ist 22mm der ganzen Nut die Löcher sind für Schrauben M3 (Kein Gewinde) einfach zum durchstecken für die M3 Muttern empfehle ich selbstsichernde.Die Nut ist nicht Für Prusa geeignet da diese m4 löcher und Gewinde hat und 25mm groß ist im Durchmesser.6 Stück für diesen Preis perfekt.Mal kucken wie lange sie halten.

Super quiet, barely any play compared to brass nuts. These fit my 3d printer perfectly. Z movement is not loud at all. I hear the motors themselves way more clearly over the lewdscrew nut.

I decided not to wait for the brass ones to wear out. sure they are self-lubricating, as they wear out, but their wear provokes the increasing possibility of backlash on a gravity-engaged moving part.These POM pieces are the world's slipperiest plastic with the best wear rate.They are a tight fit, compared to even new brass lead screw nuts, but that tightness is not binding. reassuring is the word I would use.From what I have read, the wear properties are much superior to the brass. I retain the brass as they have not been used to the point of being worn out.The Z gantry of my 3D printer feels more substantially connected and any crew-induced motion artifacts no longer exist. Just smooth layer lines, buttery smooth and consistent.This will be a first order upgrade for any and all of my new FDM printers from now on.