





🌬️ Keep it cool, keep it quiet!
The WINSINN 40mm Fan is a high-performance, lightweight cooling solution designed for 3D printers and various small electronic devices. With a dual ball bearing system, it ensures durability and longevity, operating quietly at just 32.3 dBA while providing efficient airflow of 9.2 CFM. Rated for 24V with a lifespan of up to 50,000 hours, this fan is perfect for continuous use in tight spaces.
A**R
Good fans for a good price
Good quality fans that really help keep temps down. Good air flow and fit perfectly. Not the quietest fan I’ve ever heard but great value for the money!
A**N
Mine worked
Both of mine worked. I replaced a 4010 with the 4020... They're loud. But they do the job. Def not a fan you'd want on a printer in your bedroom.
F**Y
Worked fine for 500 hours, then suddenly died (SEE UPDATE)
I bought these 4020 dual ball bearing fans to upgrade my 3D printer with bigger fans that would also be quieter than the stock ones. These fans did just that. They are much quieter than the 4010 fans that my printer was using before and also can move more air than before. The fit is pretty good through I wish the wire lead was a bit longer.The problems I have with this fan are that it has a lot of vibration and that one of them has suddenly died after only 500 hours. On the noise side of things, there is the obvious "woosh" of the air it moves and a slight high-pitched whine as the RPM increases, but the vibrations both fans give out lead me to believe that the center fan section is either not balanced properly or that there is too much play in the bearings. As for one of the fans suddenly dying after only 500 hours, that is my biggest complaint. The other fan seems to be working as expected after the same 500 hours of use. Neither one showed signs of pre-mature bearing failure.UPDATE!Turns out it was just the wire that failed, not the fan itself! I ended up removing the old wire and soldered in a new silicone wire pair. Now it is back to working like it should! I've since constrained the wire a bit better in hopes that the movement and vibrations of the print head don't cause it to fail again.As for the one fan that has been cooling the main board, that fan still functions just fine!Upgraded the rating to 4 stars! -1 star because of both the wire failure and the fact that both fans vibrate enough at 80%+ speed that it can be heard over the normal "woosh" sound of the air moving. Under that speed, the vibrations are not very noticeable.
S**E
Happier then I thought I'd be
Really very happy with these little guys didn't expect the amount of air flow for the size honestly for sure will be buying more
D**D
As advertised
Great value
A**R
One fan DOA, the other works well
Installed this fan to support my hotene upgrade. First fan did nothing. Second is in and running. Disappointed overall. I've always had good experiences with Winsinn.
T**R
Works great
Nice air flow
A**L
Good quality fan
Bought this for a 3d printer fan worked very well. Good packaging.
S**.
Powerfull and quiet
Installed on my Zero G Mercury One, have printed around 100hrs with it and it's still nice and quiet and has great airflow for the hotend.
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