How to Properly Pin a Shaft and Hub Assembly

Design guidelines to achieve the maximum strength of a pinned system and prevent damage to shaft and hub assemblies.

June 4, 2014
Spirol International Corp.
The hole in a shaft should not exceed 1/3 of the shaft diameter.
The hole in a shaft should not exceed 1/3 of the shaft diameter.

One of the primary benefits of using a Coiled Spring Pin to affix a hub or gear to a shaft is the Coiled Pin’s ability to prevent hole damage. Another benefit is that the Coiled Pin absorbs wider hole tolerances than any other press-fit pin. This translates to lower total manufacturing costs of the assembly. 

There are a few design guidelines that must be adhered to in order to achieve the maximum strength of the pinned system and prevent damage to the assembly.

 

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