Quote:
Originally Posted by philso
You can also try drilling into the "hub" part of the sprocket and using a set screw. Once the sprocket is in place on the shaft, drill into the shaft, about 1-2 mm, through the hole for the setscrew to give the setscrew somewhere to "bite". It is also possible to use two setscrews for added security. Make sure the sprocket is clamped securely when drilling. This is probably best done on a drill press.
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In my experience, there is no reason to use a set screw when you can use a spring pin. We replace all of our set screws with spring pins after a wonky set screw almost cost us an FLR 2010 blue banner!
Otherwise, yes, you can use a drill press to drill straight through the two items you want to couple and then press in a spring pin... I caution, though, that while spring pins are strong they are not invincible, and a keyed shaft is much stronger.