Befenybay 6PCS Diameter 8mm Black TR8x2 Lead Screw Nut for CNC and 3D Printer Parts (Size: Tr8x2)

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 worlds 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.

Worked!

Ender 5 plus is no longer squeeking after installing this.

These TR8x4 Lead Screw Nut are good quality, but these are not for Prusa mini, the size is diferent.

My ender 5 plus was driving me insane till I used these. Its so much better now, no more squeaks!

Very solid and tight threads. Barely any play along the t8 rod. No lubrication needed and very quiet in operation. I have known delrin to be a very strong polymer - not easy at all to wear and cut but using this material makes the most sense to make contact with metal.

It didnt make my machine as super quiet as i was hoping (i have another rail somewhere thats causing some buzzing/squeaking noises), but they did quiet it down a bit, and i feel like everything is actually running more smooth. Never used the plastic nuts before, but i dont think id go back to brass now

TR8X4 works for Anycubic Mega-X. Hole pattern is good but not threaded. Need to use longer bolts and nuts.

Good item

Quieter than brass and zero lash. Yeah they wear eventually but there are six of them in the package.