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Eureka Mignon Libra - Precise, quiet and innovative

Note - Display item:
This product is a display item. The packaging has already been opened, but the appliance is in perfect technical condition and in its original packaging. It may show slight signs of use.

You receive the full manufacturer's warranty of 2 years.
Please note: Exchanges are excluded. Of course, your statutory warranty rights apply in the event of a defect upon receipt.

If you have any questions about the condition of this unique piece, please send us an e-mail - we will help you transparently.

The Eureka Mignon Libra sets new standards in the world of espresso grinders. With an integrated scale and the revolutionary "Grind by Weight" technology, it grinds precisely by weight instead of by time. This enables exceptionally even and constant dosing - ideal for discerning home baristas and professionals.

Highlights of the Eureka Mignon Libra

  • Weight-dependent grinding - No timer, but exact grinding by weight
  • 55 mm grinding discs - High-quality hardened steel for consistent grinding results
  • Silent Technology - Particularly quiet grinding noise
  • Infinitely adjustable grind - From espresso to filter coffee
  • Integrated portafilter holder - Hands-free operation
  • Intuitive touch display - Two programmable weight settings
  • ACE system - Prevents clumping and electrostatic charging

Technical details

  • Machine type: Grind-on-demand grinder with integrated scale
  • Grinding discs: Ø55 mm made of hardened steel
  • Housing material: cast aluminum, chrome-plated
  • Bean container: 300 g capacity, removable
  • Revolutions per minute: 1,350 RPM
  • Grinding capacity: 1.4 - 1.8 g/sec for espresso
  • Grinding degree: Infinitely adjustable
  • Dimensions (W x D x H): 12.4 cm x 19.2 cm x 43 cm
  • Weight: 6.5 kg
  • Power: 310 watts
  • Warranty: 24 months (private) / 12 months (commercial)
  • Origin: Italy

Perfect grind - thanks to "Grind by Weight"

With the Mignon Libra, there is no need for tedious adjustment of time and grind - the weight always remains constant! This means you always get the same amount of ground coffee, regardless of whether you change the grind for espresso or filter coffee. This makes adjustment much easier and improves the consistency of your coffee.

Silent Technology - pleasantly quiet grinding

Thanks to the advanced Silent Technology, the Eureka Mignon Libra grinds much more quietly than conventional espresso grinders. The quiet grinding noise makes it perfect for early mornings or for use in open-plan kitchens.

Innovative portafilter holder

The height-adjustable, rubberized portafilter holder enables hands-free grinding and is compatible with almost all portafilters. An integrated "funnel function" ensures that no coffee grounds fall out.

Comparison: Weight-dependent vs. time-controlled grinding

Weight-dependent grinding (Libra) Time-controlled grinding
Always constant amount of powder Weight fluctuates depending on the grind
No readjustment when grind size changes Constant adjustment necessary
Optimal extraction Varying extraction times


Comparison: Eureka Mignon Libra vs. Eureka Mignon Libra All Purpose 65

Feature Libra All Purpose 65
Grinding disks 55 mm grinding discs, optimized for espresso 65 mm all-purpose grinding discs for espresso and filter coffee
Grind adjustment Stepless adjustment with standard adjustment wheel New "King Size" adjustment wheel with speed counter for more precise adjustment
Portafilter holder Standard holder for portafilter Tool-free height-adjustable holder for portafilter and filter coffee container
Area of application Especially for espresso Versatile for espresso, filter coffee and French press
Volume & precision Quiet and precise Quiet operation with improved consistency and less grind scattering

Scope of delivery

  • 1x Eureka Mignon Libra espresso grinder - chrome
  • 1x 300 g bean container
  • 1x Height-adjustable portafilter support
  • 1x Operating instructions (German)
  • 1x Eureka Libra Funnel included

Conclusion: Perfect precision for the perfect espresso

The Eureka Mignon Libra combines innovation, precision and convenience in a high-quality espresso grinder. Its "Grind by Weight" technology makes grinding easier and more consistent than ever before. A perfect choice for home baristas looking for the highest quality and ease of use!

Información sobre el fabricante

EUREKA, Conti Valerio S.r.l., Via Luigi Longo 39/41, 50019 Sesto Fiorentino (FI), Italy, www.eureka.co.it/en, info@eureka.co.it

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Frequently Asked Questions

I bought a new coffee grinder from Naturbohne and there are coffee residues in it.

Please note: Some manufacturers test their coffee grinders before shipping, which means that small coffee residues or bean residues can occasionally be found in the grinder. This procedure is used to test functionality and is considered a quality feature. Of course, we only sell new products - unless expressly stated otherwise.

Static charge – coffee grounds spray out from the side

With some coffee grinders, the ground coffee can become statically charged and spray out of the portafilter at the side. This means that not all of the ground coffee gets into the portafilter, which can lead to uneven extraction. Our recommendation: Use a dosing funnel to ensure that all of the ground coffee is precisely fed into the portafilter - for optimal espresso enjoyment.

What is dead space in coffee grinders?

Conventional coffee grinders often leave a so-called dead space in which coffee residues accumulate. These residues can not only affect the freshness, but also lead to old and fresh coffee grounds being mixed, which negatively affects the taste. In contrast, single dose grinders have a well-thought-out design that eliminates the dead space. Each portion is ground individually and precisely so that no residues are left behind - for a consistently pure and full-bodied coffee experience.

Which portafilter fits my espresso machine?

When choosing the right portafilter for your portafilter machine, it is important to know that each manufacturer develops its own brewing group - the most well-known is the Faema E61. However, this does not mean that any portafilter will fit without any problems. An incompatible portafilter can leak, which will have a direct negative impact on the quality of your espresso. We therefore recommend using either the portafilter originally supplied or one that is explicitly stated to be compatible with your machine. This will ensure that the pressure is optimally built up and the espresso is perfectly extracted.

Can I visit you or pick up the goods personally?

Yes, of course, you are welcome to come by and look at our products by appointment. We would be happy to advise you personally. The best thing to do is to send us an email with a few suggested appointment times.

We are located 5 minutes from the motorway between Stuttgart and Lake Constance on the edge of the Black Forest.

Important note, first use coffee grinders

Another little tip for the perfect start with your new mill:

You will get the best grinding result after you have ground about 1-2 kg of beans. It is best to use a few cheap beans so that the grinder can work optimally. And if you are wondering what you can do with the bean flour - it is perfect plant fertilizer! 🌿

It contains nitrogen, potassium, sulfur and phosphorus and is a real nutrient bomb for your plants.

¿Pueden realizar una calibración de offset en mi máquina de portafiltro?

Existen varios argumentos en contra de una calibración de compensación en las máquinas de portafiltro Lelit, especialmente en modelos como la Lelit Bianca. Estos se refieren principalmente a la complejidad y las limitaciones de la compensación como única solución para problemas de temperatura:

  1. Fluctuaciones de temperatura e inestabilidad. La compensación considera una diferencia constante entre la temperatura de la caldera y la temperatura de preparación. Sin embargo, en la práctica pueden ocurrir fluctuaciones de temperatura, por ejemplo, debido a tiempos de espera prolongados o preparación continua. Esto hace que la temperatura de preparación real no siempre sea predecible con precisión.
  2. Dependencia de las condiciones ambientales. Factores como la temperatura ambiente, la humedad y el estado de la máquina (por ejemplo, el tiempo de calentamiento) afectan significativamente la temperatura de preparación. Una compensación fija no puede equilibrar dinámicamente estas variables, lo que puede llevar a resultados inexactos.
  3. Pérdida de calor durante los tiempos de espera. Después de pausas prolongadas, el grupo de preparación se enfría y la máquina necesita tiempo para volver a la temperatura deseada. Una compensación correctamente ajustada no puede compensar esto, por lo que son necesarias medidas adicionales como un "Cooling Flush".
  4. Desajustes de fábrica. En algunos modelos de Lelit se ha encontrado que la compensación de fábrica a menudo está configurada de manera inexacta (por ejemplo, de 4 a 8 grados demasiado baja en la Lelit Bianca). Esto requiere una recalibración manual por parte de personal especializado, lo cual puede ser complicado para los usuarios finales.
  5. Malentendidos en la aplicación. Muchos usuarios están confundidos por la información contradictoria sobre la configuración de la compensación, lo que puede llevar a ajustes incorrectos. Por ejemplo, a menudo se espera que la compensación por sí sola resuelva todos los problemas de temperatura, aunque solo es parte de un sistema más complejo.

Conclusión
La calibración de compensación es una herramienta útil, pero no debe considerarse de forma aislada. Una combinación de control PID preciso, mantenimiento regular y técnicas adaptadas (por ejemplo, "spülshots") es necesaria para lograr resultados óptimos de preparación.

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