Burr grinder feeling seized or refusing to adjust? A stuck burr is almost always packed with old grounds and coffee oils, or blocked by a stray object, and a good cleaning usually frees it.
Here is why burrs stick and how to clean them.
This article will teach you:
- Why burrs seize up
- How oils and grounds pack in
- How to remove and clean them
- How to prevent it
Why the Burr Sticks
- Packed grounds hardening between the burrs.
- Coffee oils gumming the threads.
- A small stone lodged in the burrs.
- Corrosion from moisture.
What You’ll Need
- A brush and vacuum
- Grinder cleaning tablets
- Your owner’s manual
How to Free a Stuck Burr
- Unplug it. Always unplug before removing burrs.
- Remove the top burr. Take out the hopper and unlock the upper burr per your manual.
- Clean thoroughly. Brush out grounds and run cleaning tablets to cut oils.
- Reseat carefully. Refit the burr on its threads without cross-threading.
Pro Tip: Coffee oils build up invisibly and glue burrs in place over months. Running grinder cleaning tablets every few weeks keeps the burrs turning freely and the grind tasting fresh.
When to Look a Little Deeper
Because stuck burrs affect grind and jams, it helps to check related issues, and reviewing jammed beans, an uneven grind, or a stuck motor can reveal the cause.
When to Call a Pro
If the burrs are clean and reseated but still will not turn or adjust, the burr carrier or motor may be damaged and need service.
Wrapping Up
Stuck burrs are usually grounds and oils. Here’s the recap:
- Unplug before removing burrs.
- Take out the top burr.
- Clean grounds and oils fully.
- Reseat the burr carefully.
Clean the burrs, and the grinder turns freely again. You’ve got this.