by Kyle Anderson, Baratza Co-Founder and Chief Engineer
People ask us all the time about life expectancy of their burrs. It's hard to give a hard and fast rule as the life expectancy of a burr varies, depending on the type of coffee, degree of roast, grind size, volume ground, and any rocks you may run into! The increasingly popular lighter roasted beans tend to be a lot harder on the burrs. However, as a good rule of thumb you can expect the burrs on our grinders to last as follows:
- Encore, Virtuoso, Preciso and flat steel burrs (Vario and Forté) - 500-1000 pounds of coffee
- Ceramic burrs (Vario and Forté) - 1000 to 1500 pounds of coffee
So, take my household for example, I mainly use a Forté-AP to grind for espresso. My household, plus some of the Baratza team, makes about 12 double shots a day, each dosed at 20 grams. The Forté-AP is grinding 240 grams a day or around 87,600 grams/year. There are 453 grams of coffee in a pound. So I am grinding about 193 pounds/year. This number is a little low since once a month I use my grinder to cater a coffee hour at our clubhouse and serve about 100 drinks. So I estimate that I grind about 198 pounds of coffee a year. Therefore, my Forté-AP burrs should last about 5 to 7 years!
It is difficult to know when to change the burrs. One clear indication that it is time for new burrs is if your grinder is not capable of grinding coarse any more. If you have questions or issues about your burrs and grinding, we have some great technical support videos on our YouTube Channel and grinder specific, frequently asked questions, here on our website's troubleshooting page. I encourage you to check these out.