WINSINN 40mm Blower Fan 24V, 3D Printer Micro 24 Volt Fans Blower 4020 Dual Ball Bearing, Brushless Cooling 40mmx20mm 2PIN (Pack of 2Pcs)

The blower fan in the case of my CR-10S Pro V2 was starting to die after all these years and made a terrible grinding noise. It is the same fan as the part cooling blower except for the end connection. There is a clip on the hotend blower and not on the case fan. I bought this to fix that issue. It runs quieter than the previous fan with a small decrease in airflow. I definitely recommend it as a replacement for the case fans.

I bought these to cool a Raspberry Pi. At 12v, they're pretty loud, but running them at 5v (like the Pi) makes them nice and silent. They still move more than enough air. So far they've run smoothly. Looking forward to good long life with the ball bearings

I used this as a replacement for a fan inside my CR10-S Pro. The only thing to be aware of is that the wires are reversed on this compared to the fan from Creality. It was easy to snip the wires and reverse them with the connector. But if you don't take this step, the fan appears to be dead.

The fans work exactly as expected. They’re relatively quiet for this type of fan. Useful as a replacement part cooling fan on a 3D printer. The cable is relatively short so an extension may be needed. Dual ball bearing fans also tend to have an exceptional lifespan, but we will see.

fits my self designed hot ends perfectly

Does exactly what you need. I replaced my board fan and this fits and works like a charm. I suggest testing the pin assignment in the connector. I had to switch mine.

This thing blows like it says but is much louder than original from 3d printer. I know they claim to use dual ball bearings but that is not evident without tearing it apart. The standard 40mm fans that claimed to have dual ball bearings (same brand) died in less than a month of use and upon disection no ball bearings were found just the standard bushings. This blower has lasted several months so maybe it does have the ball bearings but... All in all I give it 4 stars. Price was good but noise level lost it a star.

These fans are horrible. I was going to use them for a 3D print head, but they sounded like a miniature jet engine and had horrible vibrations. I could tolerate the noise, but thr vibration was severe, and it would not work for my intended use. I ordered a recplement set, but they were also very loud and shaky. Ended up returning both.Avoid these fans if you don't want noise or vibration. It seems like every fan (including some 3010 and 4010 box fans) I have gotten from this seller has been really poor quality. The performance needed just isn't there. I would buy noctua fans if they made 24V models.