WINSINN 40mm 12V Fan - Hydraulic Bearing 8000 RPM 4020 Cooling Fan Replacement for 3D Printer/PC Cooling/Automotive, 30cm Cable with XH2.54-2PIN, Brushless 40x20mm (4Pcs)

I purchased a set of these 7 ish months ago and they're all dead or entirely too loud. Wires easily separate from the board. Two of the fans out of package I had to resolder the wires. one of the fans (not one I had to solder) lasted less than a day before making loud annoying screaming noise. The second one lasted a couple of weeks before having to be replaced and the last two started getting loud a couple of months ago but now at a point where they're unbearably loud and need to be replaced. I had purchased a 24v hydraulic bearing set. I need to find some more now but as most of these are just rebranded fans, I'm going to have to do some research to find some good fans that'll last more than a few months.

Good fan. Installed into a network switch. Reduces ambient sound output and keeps equipment temps down 6 celcius on avg. in that switch. That's a "winn" in my book!

For a very small fan it does move a fair amount of air. It is a bit louder than I thought it would be.

Good quality and fast shipping. I used if for my old battery charge and runs great just like the original.

Update 6/11/20: After 6 months, I am now on the third of the 4 I originally ordered. The first one started whining loudly after about a month and quit spinning completely after about 3. The second also started whining so loudly I couldn't stand it after about a month of use and I had to swap it out for the one I am currently using. Basically, these don't last. Original Comment: I used this fan to replace the internal rear cooling fan on my CR-10S which had begun to scream like a banshee (ever after oiling). So far, this little fan seems to do the job nicely and is much easier on my ears. The only caveat with this fan is that the insets on the mounting holes are about 1mm less shallow than the ones on the original fan -- which means that the mounting screws that came with it are ever so slightly too short. An M3x20 will BARELY engage, but you can probably make it work. An M3x22 would probably work perfectly.

These fans work pretty well! I am using them for a small air filtration unit for one of my 3D printers and they move enough air that I do not smell the filamemt being printed! I have two of them pulling air through a hepa filter and a few layers of activated carbon and they still move a descent amount of air! 😁

Absolutely terrible product. Does not have a bearing and is driven by a single chip serving as the hall effect sensor. The motor simply locks into place and whenever it does spin, it shakes as the signal and timings are not being managed. I took one apart to investigate and this is what I found.

Great Little Fans!!!... Super Quiet!!.. Will Buy More!.. Thanks

Ottima qualita, le ventole sono silenziose.

ottima qualità non troppo rumorosa e con fili adeguatamente lunghi, l'ho usata per fare una mod per il mio t300

Very Good, fan moves air much better then the thin one it replaced, i had the room for it so why not. Its a bit louder, but its inside a 3d printer so sound is not an issue, as everything else makes the same or similar noise, a few weeks constant run on them now, bit dusty but still good as new, there Good like i said, just make sure you have the room for them, there thicker than normal fan you find on a 3d printer.

Justos lo q necesitaba para un inversor y con cable largo para llegar a la conexion

Good replacement for the noisy or broken fan on the 3d printer