Where can I buy a separate engine for the cooler?

Question

Iron

Where can I buy separately the engine from the cooler? Already clambered all aliexpress and Alibaba. Somewhere, engines that are built into coolers should be sold. Engine manufacturers get them somewhere.
Engines are needed conditionally "standard". 4pin 0.8-1.2A, 1800rmp, plus or minus.

The bottom line is that I need to make my own fan, of a certain thickness, which does not exist in nature. I know how to make a fan (I have the ability to mold from plastic, print, etc.), but I don’t know where to get the engine for it (except how to pick it out of an existing fan, but this is not profitable, and not interesting, when you need a lot).

Answer 1

Take a regular brushless motor and a controller to it. Here is something like this in size similar to the motor of a standard cooler
https://aliexpress.ru/item/33053844935.html .html controller for the test, you can take something like this https://aliexpress.ru/item/4000233794568.html Just do a million different brushless, you can choose the size. Their power is several times higher than that of the cooler motor, so you can greatly win in size.

Answer 2

It will be cheaper to buy the whole cooler. Moreover, there they are all different, under different impellers

Answer 3

And what prevents you from taking any motor with a shaft that suits your characteristics and already mounting a cooler on this shaft?

Answer 4

For R&D, it's easier to open up an existing cooler.
For serial production - find the manufacturer's website - it probably says on the engine where it was made and contact them. True, not one, not ten, or even a thousand will be sold, most likely :)