Pack Of 4 WINSINN 40Mm Blower Fans 12V With Dual Ball Bearings, Ideal For 3D Printers - 40Mmx20Mm 2PIN Connectors Review

Only one of the 4 was balanced enough when running for me to feel comfortable putting it on my 3D printer. The other 3 must have unbalanced blades or off-center components, as they vibrated far too much - which made them even louder. I don't feel comfortable putting any of those on my printer, for fear of print quality and vibration-induced wear on my printer.That said, I have the _least unbalanced_ fan temporarily mounted with a good duct 4cm away from the nozzle. Printing PLA at about 60mm/s…

These fans are loud and seem to be lower quality in general. I've used fans from 3010 to 5015 purchased from WINSINN and never had an issue until these. They are for some reason louder and the soldering was very poor. The black wire was holding on by a thread and a slight tug on the red wire and the whole thing including the pad came off.I'm pretty disappointed in these. Hopefully it was just a bad batch.

I bought these fans for a dual parts fan cooling system.They are ball bearings fans and should last for a long time as most due.Noise level is way below hot end cooling fan.

I have not been able to use the fans to verify the working condition of the product due to the wire length.The connecting wires are a little over 11 inches. This length is completely useless for my needs.

All 4 had excessive vibration, only one was marginally serviceable for my use. I don't expect it to live long. That's my feedback.

They are noisy as hell with a lot of vibrations even the connectors was poorly assembled. Last time I buy anything branded as winssin

Bought this for a Dii Cooler mod on my Monoprice Maker Select Plus (aka Wanhao Duplicator i3 Plus). Wire polarity needed to be reversed and they're a bit loud, but otherwise great for the price.

Compared to the stock Creality 4020 blower fan these were noticeably louder (15db louder when measured next to the fan). There was also a weird sound/vibration/whine on lower power (50%). Another issue I had was that these were not wired correctly out of the box. I had to flip the wires in order to get it to work with my printer which was inconvenient. I only tested one fan so it may be a dud. Overall these are inexpensive fans that’ll probably get the job done, but are louder than what they…

1 out of 4 fans actually worked that is pathetic worst part is not that crappy excuse for a fan i bought, worst part Is having to undo quality work that I did on my 3-D printer because these Cheapskates Think it's all right to sell broken parts to people. People like this Make it really hard on other companies that actually sell quality products.