Shaft boss best connection

[aur_el]

Hi all
I need to design an engine conveyor like that in the attached pictures.
I just have some pictures taken from my colleagues.
My problem for the moment is understand which would be the best connection to the shaft of the end hardened boss/sleeve. I know it need to be keyed for the transmission of the movement, but how to prevent the boss sliding out of the shaft? The only way I guessed is to use a grub screw. Is there any better, more adequate system?
Thank you.


2020-11-08 17_52_41-Photos.png 2020-11-08 17_21_06-Photos.png 20201107_082632 (1).jpg

[jboggs]

One of the many lessons from my decades of engineering is this: Use set screws with caution. They are very often misused and end up damaging other components and failing.

Look at your first photo. See the bearing locknut with a lockwasher at the top? That is a very common method of retaining components on a shaft. Maybe you can duplicate that. Another way is to use a taper-lock hub or bushing. Or you could just use a bolt in the end of the shaft with a cap plate. If you do that make sure you provide some method to insure that the bolt does not back out.

[Hudson]

I'm voting for taper lock split bushings and matching hub. You may not need the key depending upon the torque applied. They hold really well.