Spirol International posted How to properly pin a shaft and hub assembly Spirol International Danielson, CT:

How to properly pin a shaft and hub assembly

The hole in a shaft should not exceed 1/3 of the shaft diameter. For mild steel and non-ferrous shafts, standard duty pins are recommended. The extra strength of a heavy-duty pin is only beneficial if the hole is less than 1/4 the diameter of the shaft or if the shaft is hardened (Figure One).
It is recommended that the hub be designed with a minimum wall…

How to properly pin a shaft and hub assembly
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