Teac A-3340S A-3300SX and others Capstan fan
This is the incredibly rare and very delicate capstan fan., they are very fragile and break easier than thin eggshells.
I think the idea was to create a bit of air flow around and through the capstan motor as it gets warm
This has to be packed very very well
But if you are trying to restore a machine fully you will need this, overseas buyers will need check before ordering as I have set the post at 1 kilo for this but it may weigh less when packed.