Eureka Mignon Libra-55 Digital

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The Eureka Mignon Libra-55 Digital Touchscreen Grind-by-Weight is a precision espresso grinder designed for coffee enthusiasts, home baristas and professional coffee stations that want accurate dosing, consistent results and a faster espresso workflow.

Unlike traditional timed grinders, the Mignon Libra uses Eureka's patented Instant Grind Weighing Technology to grind directly by weight. Simply program your desired dose in grams, place your portafilter in position and let the grinder automatically stop when the target weight is reached.

With 55mm hardened-steel flat burrs, touchscreen controls, stepless micrometric adjustment, Silent Technology and ACE anti-clump technology, the Libra combines precision and convenience in the compact Eureka Mignon platform.

Grind by Weight — Precision in Every Dose

The Mignon Libra eliminates much of the guesswork associated with timed grinding.

Instead of programming the grinder to run for a specific number of seconds, you set the amount of coffee you want in grams.

The integrated weighing system monitors the coffee as it is dispensed and automatically stops the grinding process when your programmed dose is reached.

Set the Weight → Grind → Stop Automatically.

Eureka specifies dose consistency of approximately ±0.2 g, giving you a repeatable dosing workflow from shot to shot.

Instant Grind Weighing Technology

The Libra's patented Instant Grind Weighing Technology measures the ground coffee in real time while grinding directly into the portafilter.

This makes the process faster and more convenient than grinding by time and manually checking the dose with a separate scale.

It is especially useful when consistency matters and you want to spend less time weighing coffee and more time preparing espresso.

Digital Touchscreen Control

The integrated touchscreen gives you simple, direct control over your grinding and dosing settings.

The Libra provides:

• Two programmable doses
• Continuous grinding mode
• Touchscreen operation
• Digital dose programming
• Grind-by-weight control

Select your desired dose and let the Libra handle the weighing automatically.

55mm Hardened-Steel Flat Burrs

The Mignon Libra is equipped with 55mm flat hardened-steel burrs designed specifically for espresso grinding.

The burr set provides efficient grinding performance while giving you the control needed to dial in different coffees and espresso recipes.

Eureka rates the Libra at approximately 1.8–2.5 g/s for espresso, depending on the coffee and grind setting.

Stepless Micrometric Grind Adjustment

Dial in your espresso with Eureka's patented stepless micrometric grind adjustment system.

The continuous adjustment allows you to make precise grind changes without being restricted to fixed settings.

Fine-tune your grind according to:

• Coffee origin
• Roast level
• Extraction time
• Dose
• Espresso recipe
• Changing environmental conditions

Small grind adjustments can make a significant difference to espresso extraction, and the Libra gives you precise control over those changes.

Eureka Silent Technology

A grinder should perform without overwhelming your coffee station.

The Mignon Libra incorporates Eureka Silent Technology, designed to reduce operating noise for a more comfortable grinding experience.

This makes the Libra well suited to home kitchens, offices, cafés and customer-facing coffee environments.

ACE Anti-Clump & Anti-Static System

Eureka's ACE System is designed to reduce clumping and electrostatic effects during grinding.

This helps produce a cleaner, more consistent flow of coffee grounds into the portafilter while helping reduce mess around the espresso station.

Adjustable Hands-Free Portafilter Fork

The Libra includes a versatile portafilter fork that can be adjusted by hand without additional tools.

Position your portafilter directly beneath the grinder and let the Libra grind hands-free.

The adjustable design accommodates different portafilter configurations and helps create a more convenient espresso workflow.

Built for Consistent Espresso

The Mignon Libra combines the features that matter most for precision espresso preparation:

• Grind-by-weight dosing
• Patented Instant Grind Weighing Technology
• ±0.2 g specified dose consistency
• 55mm hardened-steel flat burrs
• Digital touchscreen control
• Two programmable doses
• Continuous grinding mode
• Stepless micrometric grind adjustment
• Eureka Silent Technology
• ACE anti-clump and anti-static system
• Adjustable hands-free portafilter fork
• 300 g bean hopper
• Compact Mignon design