54 mm, 55 mm, 64 mm, 83 mm… if you're looking for a coffee grinder, you'll encounter a variety of burr sizes. But what does that difference actually mean?
The diameter of a burr does not simply determine if a grinder is 'better'. It mainly influences the character of the grind, how the grinder works, and ultimately how your coffee behaves in the cup.
Therefore, the right question is not: which burr is the largest?
But: which grinding behavior suits the coffee I want to brew?
Smaller burrs: more direct and compact
Smaller burrs, such as 54 mm or 55 mm, are often found in compact espresso coffee grinders.
These grinders are often designed for daily use: quickly brewing a good espresso, easy adjustment, and achieving a consistent grind.
Due to the smaller grinding surface, the grinder often has a more direct character. This suits coffee drinkers who:
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primarily brew espresso
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use one or a few favorite coffees
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value a practical workflow
Medium-sized burrs: the all-round choice
Burrs around 64 mm and 65 mm offer a good middle ground.
Due to the larger grinding surface, the grinder can process the coffee more gently. This often provides more stability during grinding and allows more room to explore different coffees and recipes.
This type of burr is suitable for the home barista who:
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enjoys trying different beans
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seeks more control over espresso
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regularly experiments with settings
Large burrs: maximum control and refinement
From approximately 80 mm upwards, you enter a different category. For example, 83 mm burrs are primarily seen in larger single-dose grinders.
The larger grinding surface ensures that coffee beans are processed very efficiently. As a result, these grinders can often produce a very consistent grind and offer a lot of control over extraction.
This is especially suitable for coffee enthusiasts who:
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experiment a lot with different coffees
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want to discover different flavor profiles
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highly value precision
Does the size of the burr influence the taste?
Yes, but it's not the only factor.
The diameter of a burr primarily affects the grinding behavior. A larger burr can lead to a more even grind and more control, which influences how flavors emerge from the coffee beans.
In practice, this means:
Smaller burrs
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practical and efficient
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strongly focused on daily use
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ideal for consistent espresso
Larger burrs
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more calm during grinding
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more control over extraction
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interesting for more complex coffees and experimentation
However, the final taste is also determined by the shape of the burrs, the material, the coffee bean, and your recipe.
From 55 mm to 83 mm: which one suits you?
There is no perfect diameter for everyone.
A 55 mm grinder often perfectly suits someone who primarily wants to brew a reliable daily espresso and doesn't plan to experiment much.
A 65 mm grinder offers more room for experimentation and control.
An 83 mm grinder is especially interesting for the coffee lover who wants to get the most out of different coffees.
So, the size of your burrs doesn't tell you which grinder is the best. It mainly tells you what kind of coffee behavior you can expect from the grinder.
Want to know more?
Still wondering which coffee grinder suits you? Are you an espresso drinker or a filter drinker? Let us know and we'll be happy to help you find the best grinder for you.
