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Lloyd E. Sponenburgh[_3_]

fired this volley in
:

I want to locate a pulley on a shaft. The timing of the pulley is
critical.

Snug-fitting keys are probably the most common way. Another common way is
with a roll pin and a diametral hole through hub and shaft.

If you have an odd number of teeth on the pulley, and if you pinned it, I'd
use a tapered pin and taper the hole so it only goes on one way. If the
tooth count is even, it doesn't matter.

Lloyd