I have a pulley with an 8mm threaded bore:
The threaded length is not enough, and it leaves about 5mm of the threaded bore un-mounted!
The extension shaft is basically pushed onto the motor shaft, and the push fit allows it to move without any relative motion.
Now, under human load, the pulley “unscrews” off, and the extension shaft just loosens, so it cannot be push fitted anymore.
With this info in mind, how can I mount this pulley on this shaft?