The Baratza Blog

Burrs and their life expectancy!

September 6th, 2012 By admin | Comments: no responses

September 6, 2012

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 and Preciso burrs 300 to 500 pounds of coffee
  • Vario and Vario-W 500 to 1000 pounds of coffee

So, take my household for example, I mainly use a Vario to grind for espresso. My household makes about 8 double shots a day. Dose for the shots are 20 grams. The Vario is grinding 160 grams a day or around 58,400 grams a year. There are 453 grams of coffee in a pound. So I am grinding about 129 pounds a year. This number is a little low since once a month I use my grinder to cater a coffee hour at church and serve about 100 drinks. I also grind for Chemex, French press, Aeropress, and there is always the wasted coffee dialing in a new coffee. So I estimate that I grind about 150 pounds of coffee a year. Therefore, my Vario burrs should last about 3 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 grinding coarse any more.