WINSINN 40mm Fan 24V Dual Ball Bearing Brushless 4020 40x20mm for Cooling Creality Ender 3 / Pro - High Speed (Pack of 4Pcs)

Good cooling fans. Really quiet.

They are VERY powerful. If you're printing hi-temp materials and need some extra-cooling, this is your guy. Just be aware: They are considerably noisier than the traditional 4010 fans.

Bought for my 3d printers for hot end cooling. These are the loudest thing on my printers now, they are so loud it's crazy really Dual ball bearing is definitely better than hydraulic, no rattle or sticking, just very loud air movement sound Am going to consider finding some quiet ones

Sehr gutes Produkt Set

Good but noisy. But that's pretty normal

Produto silencioso e duradouro. O pack vem 4 que irá durar por muito tempo.

This replaced the stock 4010 heatsink fan on an Ender 3 Pro. It’s definitely quieter than the original while moving more air. It’s not quite as good as a similarly-sized Noctua, but they don’t make 24v units and I didn’t feel like adding a buck converter, especially since the power supply fan is much louder. With that success I also replaced the heatsink fan on a CR10S Pro where it’s working just as well. The picture attached was taken mid-installation so you can see it better. Now I have two spares in case one dies or (more likely) I get another printer with a 4010. If you don’t have a JST connector kit, I strongly suggest buying one. Sure, you can solder the wires, but using plugs gives you a lot more flexibility with swapping out fans, wiring placement, etc. Pro tip: use hot melt glue after you solder the wires to the socket to secure and insulate them. You can see mine in the background of the Ender 3 pic.

Por el precio bien