hopper grinders (on-demand grinders)
Eureka Mignon Libra Brew, GbW for filter coffee
Eureka · Coffee grinder · Made in Italy

Eureka Mignon Libra BrewGbW for filter coffee

55 mm MahlwerkFor office & home barista
ColorChrome
Also available as Eureka Mignon Silenzio 55 16CR (361,45 €) · Eureka Mignon Silenzio 55 15BL (328,21 €) · Eureka Mignon Libra 65 All Purpose 16CR (674,09 €) Compare models ↓
Eureka Mignon Libra BrewShipping 15 € · 14-day right of withdrawal Withdrawal under our cancellation policy; no additional voluntary returns.
668,89 € You save 31,15 € 637,74 € incl. VAT · plus shipping 15 €
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Model
Eureka Mignon Libra Brew
Condition
New
Manufacturer
Eureka, Italy
Manufacturer number
EMR55-951-Brew
Model comparison

What sets the Eureka Mignon Libra Brew apart from its siblings?

The same product line, different configurations. The rows come from the same data sheet that appears further below.

Same for all: Grinder type, Grind size adjustment, Control, Motor power

hopper grinders (on-demand grinders)This page
Eureka Mignon Libra Brew
Eureka Mignon Libra Brew Price from 591,00 €
Grinder type
hopper grinders (on-demand grinders)

The beans sit in the hopper and are ground on demand. This is the faster way in everyday life, especially if the same coffee is used all the time. A full hopper, however, means that the beans at the bottom are exposed to the air for longer.

Grinder
55 mm

The diameter of the grinding burrs determines how many revolutions are needed for the same amount of coffee. Larger burrs need fewer revolutions, the grind warms up less, and heat in the grind reduces aroma.

Burrs
flat, 55 mm brew, hardened steel

Flat burrs grind with two parallel rings and deliver a tight particle size distribution. You do not recognize dull burrs by appearance but by the fact that the shot runs faster than usual.

Grind size adjustment
stepless, micrometric

The grinder weighs itself and grinds until the set amount is in the portafilter. That stays the same even when the bean changes or the bag gets emptier, where a time-based control would need readjusting.

Dosing
dose control by scale

A large hopper means less frequent refilling. Bear in mind that beans age in it: anything that stays in the hopper for longer than a few days loses aroma, no matter how good the grinder is.

Control
No app control
Grinding capacity
not specified
Bean hopper
300 g
Burr lifespan
300 kg

A large hopper means less frequent refilling. Bear in mind that beans age in it: anything that stays in the hopper for longer than a few days loses aroma, no matter how good the grinder is.

Motor power
310 W
hopper grinders (on-demand grinders)
Eureka Mignon Silenzio 55 16CR
Eureka Mignon Silenzio 55 16CR Price from 361,45 €
Grinder type
hopper grinders (on-demand grinders)
Grinder
55 mm
Burrs
flat, 55 mm, hardened steel
Grind size adjustment
stepless, micrometric
Dosing
timed dose control
Control
No app control
Grinding capacity
1.8 g/s
Bean hopper
300 g
Burr lifespan
300 kg
Motor power
310 W
hopper grinders (on-demand grinders)
Eureka Mignon Silenzio 55 15BL
Eureka Mignon Silenzio 55 15BL Price from 328,21 €
Grinder type
hopper grinders (on-demand grinders)
Grinder
55 mm
Burrs
flat, 55 mm, hardened steel
Grind size adjustment
stepless, micrometric
Dosing
timed dose control
Control
No app control
Grinding capacity
1.8 g/s
Bean hopper
300 g
Burr lifespan
300 kg
Motor power
310 W
hopper grinders (on-demand grinders)
Eureka Mignon Libra 65 All Purpose 16CR
Eureka Mignon Libra 65 All Purpose 16CR Price from 674,09 €
Grinder type
hopper grinders (on-demand grinders)
Grinder
65 mm
Burrs
flat, 65 mm, hardened steel
Grind size adjustment
stepless, micrometric
Dosing
dose control by scale
Control
No app control
Grinding capacity
0.8 g/s
Bean hopper
350 g
Burr lifespan
500 kg
Motor power
310 W
Who the Eureka Mignon Libra Brew is made for

It is ground even at six in the morning.

The beans sit in the hopper, ground on demand. This is the faster way when the same variety is always running.

  1. 01 No scale next to itThe grinder weighs the dose itself and stops at the set weight. No reweighing, no residue in the portafilter, the same espresso in the morning as yesterday.
  2. 02 Early risersInsulated housing. It is not a quiet grinder, but the difference can be heard in the morning.
What's inside

The technology that matters for espresso.

On the machine

Grinder55 mm burrs

The diameter of the grinding burrs determines how many revolutions are needed for the same amount of coffee.

Burrsflat brew, hardened steel

Flat burrs grind with two parallel rings and deliver a tight particle size distribution.

Grind sizestepless, micrometric

The grinder weighs itself and grinds until the set amount is in the portafilter.

DosingScale dosing

A large hopper means less frequent refilling.

Inside: you do not see it, but you notice it

BeansBean hopper 300 g

A large hopper means less frequent refilling.

TypeOn-Demand

The beans sit in the hopper and are ground on demand.

LifespanGrind burrs approx. 300 kg

The manufacturer's guideline for how much coffee the burrs can handle before they should be replaced.

NoiseSilent Technology

A sound-insulated housing and a decoupled motor reduce grinding noise.

What matters for the grinder

What matters for this grinder.

The numbers from the data sheet, in the order that matters. A faster grinder does not grind better, it only grinds more.

55 mm

Large burrs, cooler grounds

The larger the burrs, the fewer revolutions are needed for the same amount of coffee. The grounds heat up less, and heat in the ground coffee costs aroma. Installed are flat brew, hardened steel.

300 kg

How long the burrs last

Manufacturer specification for when the burrs should be replaced. Dull burrs are not noticeable by the grind appearance, but only by taste.

13 × 20 cm

This is how much space it needs

These are 260 square centimeters of counter that are permanently occupied. At 43 cm height you need space above it for refilling.

All values come from the data sheet of this device. If a specification is missing, it is not listed here.

Technical data

The data sheet, complete and without needing to ask.

The same values by which you filter and compare in the shop. Is something missing? Write to us, we'll add it.

Grinder

Grinder typehopper grinders (on-demand grinders)

The beans sit in the hopper and are ground on demand. This is the faster way in everyday life, especially if the same coffee is used all the time. A full hopper, however, means that the beans at the bottom are exposed to the air for longer.

Grinder55 mm

The diameter of the grinding burrs determines how many revolutions are needed for the same amount of coffee. Larger burrs need fewer revolutions, the grind warms up less, and heat in the grind reduces aroma.

Burrsflat, 55 mm brew, hardened steel

Flat burrs grind with two parallel rings and deliver a tight particle size distribution. You do not recognize dull burrs by appearance but by the fact that the shot runs faster than usual.

Grind size adjustmentstepless, micrometric

The grinder weighs itself and grinds until the set amount is in the portafilter. That stays the same even when the bean changes or the bag gets emptier, where a time-based control would need readjusting.

Burr lifespan300 kg

A large hopper means less frequent refilling. Bear in mind that beans age in it: anything that stays in the hopper for longer than a few days loses aroma, no matter how good the grinder is.

Dosing and performance

Dosingdose control by scale

A large hopper means less frequent refilling. Bear in mind that beans age in it: anything that stays in the hopper for longer than a few days loses aroma, no matter how good the grinder is.

Bean hopper300 g

Operation

Noise reductionSilent Technology

A sound-insulated housing and a decoupled motor reduce grinding noise. The grinder is still not quiet, but the difference is clearly noticeable in the morning in an open-plan kitchen.

ControlNo app control

Dimensions and energy

Width13 cm
Depth20 cm
Height43 cm
Weight7 kg
Motor power310 W

Use

Area of applicationoffice, home barista

Manufacturer: Eureka · EUREKA, Conti Valerio S.r.l., Via Luigi Longo 39/41, 50019 Sesto Fiorentino (FI), Italy, www.eureka.co.it/en, [email protected]

From our roastery

The matching espresso, freshly roasted.

Three varieties that we have dialed in on exactly this machine. Start recipe included.

All coffee beans in our range are organic.

Vesuv Organic Espresso Blend, Arabica and Robusta Vesuv Organic Espresso Blend, Arabica and Robusta

Intense. Spicy. Powerful. Vesuv is our darkest espresso.

Start recipe: 17-18 g in the double basket → 34-38 g in 25-28 s

Nachtgold Decaf, decaffeinated organic coffee from Mexico Nachtgold Decaf, decaffeinated organic coffee from Mexico

On the first sip woodland honey and dried fig, followed by milk chocolate, caramel and malt in the finish.

Start recipe: 18 g → 36 g in 25 s

Andenperle Bio Espresso aus Peru, Villa Rica Andenperle Bio Espresso aus Peru, Villa Rica

Mild and nutty on the first sip, with almond and caramel, followed by a fine citrus note.

Start recipe: 17-18 g → 34-43 g (1:2 to 1:2.5) in 27-30 s

Beans ship free with the machine and come from the same roast week.

Useful accessories

The parts you really need

Grinder brush for coffee grinder Grinder brush for coffee grinder

Ground coffee stays in the grind chute and goes stale there. A quick pass with the brush after each grind is enough.

21,80 €incl. VAT.
Puly Grind Grinder Cleaner 10x15g Puly Grind Grinder Cleaner 10x15g

Coffee oils coat the burrs and shift the grind size without you seeing it. Every few weeks, run a bag through the grinder.

16,62 €incl. VAT.
Service & warranty

You buy a machine for ten years. We'll be there.

2 years statutory warranty, handled by us

You write to us, not the manufacturer. We organize pickup, repair and return shipping.

Spare parts & maintenance

Seals, shower screens, pumps in stock. Maintenance service recommended after two years.

Installments via PayPal

* Creditworthiness required. Installment example PayPal Installments: effective annual interest rate 12,49 % p. a., fixed nominal interest rate 11,80 % p. a., term 24 months. PayPal shows terms and total costs in the next step. Only for customers resident in Germany.

Was unterscheidet die Eureka Mignon Libra Brew, GbW für Filterkaffee von der Eureka Mignon Single Dose?

Die Eureka Mignon Libra Brew, GbW für Filterkaffee unterscheidet sich von der Eureka Mignon Single Dose hauptsächlich durch ihre Spezialisierung auf Filterkaffee und die integrierte Grind-by-Weight Technologie. Diese ermöglicht ein grammgenaues Mahlen in Echtzeit, was für manuelle Brühmethen wie Handfilter oder Chemex optimiert ist. Im Gegensatz dazu ist die Mignon Single Dose auf das Mahlen von Einzelportionen ausgelegt, fokussiert sich jedoch eher auf Espresso-Zubereitungen.

Should I buy the Eureka Mignon Libra Brew, GbW for filter coffee or the Eureka Mignon Oro XL?

If you primarily prepare filter coffee, the Eureka Mignon Libra Brew, GbW is recommended as it was specifically designed for this purpose. It offers a Grind-by-Weight function that makes grinding particularly precise.

Is the Eureka Mignon Libra Brew, GbW suitable for filter coffee?

The Eureka Mignon Libra Brew, GbW is optimal for preparing filter coffee. Thanks to Grind-by-Weight technology, you always get the desired amount of coffee and a consistent grind. This makes the grinder ideal for manual brewing methods such as hand filter, Chemex, or V60.

55-mm-Mahlscheiben für Filter, mahlt die Libra Brew gleichmäßig genug für gewaschene Geishas oder nur für Alltagskaffee?

Die 55-mm-Scheiben sind speziell für Filter-Grind-Range ausgelegt (ca. 400–800 µm je nach Methode). Eureka nutzt hier kein Espresso-Burr-Design, sondern eine gröbere Geometrie für weniger Fines im Pour-Over-Bereich. Particle Distribution ist sauberer als bei umgebauten Espressomühlen. Für gewaschene Äthiopier oder Panama Geishas holst du klarere Geschmacksprofile raus, wenig Bitterkeit durch Überextraktion der Fines. Nicht EK43-Niveau, aber deutlich über Entry-Mühlen.

Deckt die Libra Brew mit einer einzigen Umdrehung wirklich alle Filtermahlgrade von V60 bis French Press ab?

Ja, Eureka gibt an, dass eine komplette Rotation alle Filtergrößen abdeckt. Das Easy Setting System nutzt die 55-mm-Scheiben mit Filter-spezifischer Geometrie und stufenlose Mikrometer-Regulation. Praktisch bedeutet das: V60 bei ca. 0,6–0,8 mm Partikelgröße, Chemex bei 0,9–1,0 mm, French Press bei 1,1–1,2 mm, alles in einem Dial-Sweep. Die größere Skala und vertikale Anzeige macht Feinabstufungen sichtbar. Ob die Partikelverteilung bei groben Graden wirklich clean genug für Cold Brew ist, hängt von den Burr-Profilen ab, Filterscheiben haben weniger Fines als Espresso-Geometrien, aber für maximale Klarheit bei Immersion würde ich trotzdem nachmessen.

Was bedeutet Grind-by-Weight und warum ist das wichtig?

Grind-by-Weight heißt: Die Mühle wiegt das Kaffeemehl während des Mahlens und stoppt automatisch bei der eingestellten Grammzahl. Du dosierst also nach Gewicht statt nach Zeit. Der Vorteil: Du bekommst jedes Mal exakt die gleiche Menge Kaffee, egal ob die Bohnen frisch oder älter sind. Bei Filterkaffee ist das entscheidend, weil schon 1 Gramm Unterschied das Brühverhältnis verändert. Die Libra Brew schafft ±0,1–0,15 Gramm Genauigkeit. Das heißt: reproduzierbare Ergebnisse ohne Nachwiegen.

Wie viel Kaffee bleibt in der Mühle hängen?

Die Libra Brew ist eine On-Demand-Mühle mit Vorratsbehälter, da bleibt immer etwas Restmenge im Mahlwerk. Eureka gibt für die Mignon-Serie typischerweise unter 1 Gramm Retention an. Das heißt: Beim ersten Durchgang nach dem Befüllen kommt etwas weniger raus. Danach schiebt jede neue Mahlung die alte durch. Für Single-Dose-Betrieb ohne Retention wäre die Mignon Single Dose oder Zero besser geeignet, die haben ein geneigtes Gehäuse und Blow-Up-System.

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