24V Cooling Fan - Ball Bearing - 40mm x 40mm

This worked well and was easy to install.

The fan works! I ended up not needing it, but I liked the business, so here's my review to help out.

Fan works. Had issues at first with the fan not working with variable speeds, but changed the PWM to 100 and now it idles down properly instead off turning off. It is being used as a hotend fan controlled by a Duet Wifi board.

replaced a sleeve bearing fan and am enjoying the lower noise level

This replacement fan is significantly quieter at all speeds as the motor/blades are better balanced. Overall a good durable fan for hot end cooling if its to be running at max continuously when 3D printer is on.

I am impressed with the fast and efficient service from Spool3D!! I had my parts in 3 days. I am waiting for 3 months for the same parts from China. Still not here!! The fan fit my Tevo Tornado hotend like a glove!! I trimmed the wires shorter and soldered a 2 pin plug on it so it could be changed out if need be!! No problems so far!! Thanks, Spool3D!!

This BB fan replaces the original sleeve bearing main board cooling fan which is now hardwired directly to the main 24v line from the PSU at the terminal of the board. It runs continuusly on turning the 3d printer on to cool the stepper motor heat sinks, CPU heat sink and 4 stepper smoothers with all related wiring in the fairly confined space.