Functional Benefits of Chamfering and Deburring

If a burr isn’t removed, it can eventually break off during operation and end up damaging bearings or gears inside a gearbox. Over-carbonizing makes things worse by increasing pressure on sharp lateral gear surfaces, which can lead to cracking or failure. Hardened burrs also create problems downstream, causing premature wear on tools used in later finishing steps. On top of all that, extremely sharp burrs pose a real safety risk during handling, so removing them helps reduce the chance of injury.

So why roll? The rolling operation is used to eliminate material that builds up on the tooth flanks during chamfering as a result of plastic deformation. Chamfering and deburring can compress the material structure at the surface, leaving it uneven or stressed. Rolling smooths and levels the surface by redistributing that material, allowing it to sink back in and creating a more stable, uniform tooth profile.