Installation Guide: Achieving the Perfect Interference Fit with Groove Pins

Hole Tolerances, Insertion Forces, and Best Practices
A primary advantage of groove pins is simplified hole preparation, but correct installation procedures are critical to ensuring maximum retention.

This article provides a practical guide for manufacturing engineers.
We detail recommended drilled hole size tolerances (which are typically looser than for standard dowel pins).
The article discusses factors influencing insertion force, including pin diameter, material hardness, and the type of host material (e.g., differences between installing in aluminum alloys versus cast iron).

We also compare different installation methods: from simple manual hammering (for small batches) to automated pneumatic or hydraulic presses (for high-volume production).

Emphasis is placed on avoiding common errors, such as oversized holes leading to looseness, or undersized holes causing excessive insertion force and substrate damage.