Compare Grinders


	Rancilio	Eureka
MSRP
MSRP	$440	$799
Skill Level
Skill Level	Beginner	Intermediate
Type
Type	Electric	Electric
Activation
Activation	Rocker Switch	Button
Grind Method
Grind Method	Flat Burr	Flat Burr
Burr Diameter
Burr Diameter	50 mm	55 mm
Adjustment
Adjustment	Stepped	Stepless
Adjustment Scale
Adjustment Scale	10+ micron	1 micron
Dosing Method
Dosing Method	Lever Dispenser	Grind by Weight
Dosing Type
Dosing Type	Hopper	Hopper
Retention
Retention	1 - 1.5 g	1 - 1.5 g
Grind Range
Grind Range	Espresso	Espresso
Time to Grind (18g)
Time to Grind (18g)	30	11
Motor RPM
Motor RPM	1350 rpm	1350 rpm
Swappable Burrset
Swappable Burrset	No	No
Adjustable RPM
Adjustable RPM	No	No
Weight
Weight	7 kg	6.5 kg
Material
Material	Plastic	Black Aluminum
Dosing Cup
Dosing Cup	No Information	No Information

EspressoBot Comparison

Machine Overview

The Eureka Mignon Libra is priced at $799 and is suitable for intermediate skill level users, while the Rancilio Rocky is offered at a lower price of $440 and targets beginner users. Both grinders fall into the semi-automatic category, catering to different segments of the espresso market. The disparity in price reflects the differing target audiences and the associated features expected by each skill level.

Brewing Comparison

In terms of grinding information, both grinders utilize flat burrs, but their diameters differ; the Mignon Libra has a 55 mm diameter while the Rocky has a 50 mm diameter. The Mignon Libra employs a stepless adjustment method with a 1-micron adjustment scale, enabling finer control over grind size, which benefits experienced users. Conversely, the Rocky features a stepped adjustment with a 10+ micron scale, making it simpler for beginners to manage. Both models use a hopper type for dosing, with the Mignon Libra primarily relying on weight and the Rocky on a lever dispenser.

Features Comparison

When comparing key features, the Mignon Libra has a grind range specifically for espresso and operates at a constant RPM of 1350, with no option for adjustable RPMs or swappable burrs. On the other hand, the Rocky also features a consistent RPM of 1350 and lacks adjustable RPMs or swappable burrs. Both grinders retain 1 to 1.5 grams of coffee, ensuring minimal waste during grinding. The shared absence of swappable burrs may limit customization options for users wishing to experiment with different burr types.

Note: Espresso Setup Chris is expirementing with generated summaries for dynamic pages (we have 10,000+ so I can't write for all of them!) If you found this useful, or awful, please shoot me an email with feedback Chris@EspressoSetupBuilder.com. May your shots be perfectly extracted and milk frothy.

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