Internal Recessing Unit (IRU) Challenges and Best Practices
Erica Dzomba2025-05-06T12:09:57-05:00Internal Recessing Units (IRUs) are specialized tools used when multiple grooves need to be machined into the same bore. Unlike single-point tools like boring bars, IRUs offer advantages in terms of speed and consistency. A single point tool can take a long time and be less consistent in diameter and position of the lands/grooves due to deflection and push off. Also, if the tool breaks, it leaves a partially finished part that needs to be scrapped.









