Rancilio Rocky Grinder Burrs

If you notice your grind consistency has dropped, your shots are channeling, or you have to adjust the grind setting significantly finer to get the same extraction, your burrs are likely worn. Dull burrs produce more fines and heat, which can negatively impact the flavor profile of your espresso.

Yes, these are the standard Left Hand (LH) configuration burrs designed for the Rancilio Rocky. They are also compatible with the Rancilio MD40 and Promac MDCLUB models.

Replacing the burrs is a straightforward maintenance task that most home baristas can handle with basic tools. You will need to remove the upper burr carrier and unscrew the old burrs, ensuring the mounting surface is clean before installing the new set.

These burrs measure 50mm in diameter, with a 31mm inner diameter and an 8mm thickness. They feature three mounting holes for a secure fit.

Yes, it is standard practice to recalibrate your grinder after a burr swap. You may notice your zero point has shifted, so plan to dial in your espresso settings again once the new burrs are installed.