Quote:
Originally Posted by nathannfm
If I understand you correctly you would be putting the set screw in shear as some of it would be threaded into the shaft and some of it would be threaded into the component. I would say this is probably not best practice but depending on the application it could work. If possible I would drill the hole all the way through the shaft and out the other side of the component and use the entire length, this will at least give you 2 shear points instead of 1. It would also help you tap the hole as it can be difficult to properly tap a very shallow blind hole. Also, if possible I would also recommend using a pin in said through hole instead of a set screw as the threads on screws act as stress risers when put in shear like this.
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Thank you! That information is very helpful.
I would use a shear pin, but I don't want to deal with getting them in; apparently it's very tricky.
I ask because SDP-SI sells pulleys with set screws on them, and I can't really key the shaft and the pulley easily. The easist way to do it would be to leave the pulley threaded and just drill a bit into the shaft. That way the set screw still stis okay.
It doesn't look like it'll be a problem because I decided to go with gears anyway, but I might need this for future stuff.