Eureka Mignon Libra-55 Digital Grinder - Chrome

Eureka Mignon Libra 55 Digital Grinder – Chrome

Overview

The Eureka Mignon Libra 55 Digital Grinder in Chrome brings laboratory-level dosing precision to the home espresso bar with patented grind-by-weight technology and a polished finish that pairs beautifully with premium espresso machines. Rather than relying on timed grinding, the Libra continuously measures coffee as it exits the burrs, stopping automatically when your programmed weight is reached for remarkably consistent results.

Built around Eureka's renowned Mignon platform, the Libra combines 55mm hardened steel flat burrs, stepless micrometric adjustment, an intuitive touch display, and exceptionally quiet operation into a compact grinder designed specifically for espresso. Its patented Instant Grind Weighing (IGW) technology minimizes waste, simplifies dialing in, and produces repeatable doses with impressive accuracy.

Finished in mirror-polished chrome, the Libra offers both professional performance and timeless styling, making it an ideal choice for coffee enthusiasts who appreciate precision engineering as much as refined aesthetics.

Who It's For

• Home baristas seeking highly accurate espresso dosing.
• Owners of premium home espresso machines.
• Coffee enthusiasts upgrading from timed grinders.
• Users who want faster, cleaner espresso preparation.
• Espresso lovers pursuing consistent extractions every day.
• Anyone wanting grind-by-weight technology in a compact grinder.

What's in the Box

Eureka Mignon Libra 55 Grinder | Libra Magnetic Dosing Funnel | Adjustable Hands-Free Portafilter Fork | 300g Bean Hopper | Bench Testing, Calibration & Programming

Grind by Weight with Patented IGW Technology

The Mignon Libra replaces traditional time-based grinding with Eureka's patented Instant Grind Weighing Technology. During grinding, an integrated weighing system continuously measures the coffee entering the portafilter and automatically stops once the programmed target weight has been reached.

This approach dramatically improves consistency, reduces wasted coffee, and removes much of the trial-and-error normally associated with espresso preparation.

• Patented Instant Grind Weighing (IGW)
• Real-Time Weight Measurement
• Automatic Weight-Based Stop
• Exceptional Dose Repeatability

Consistent Espresso Starts with Better Grinding

The Libra's 55mm hardened steel flat burrs produce uniform particle distribution for balanced espresso extraction, while Eureka's patented stepless micrometric adjustment allows extremely precise grind changes when dialing in different coffees.

Because adjustments are made using Eureka's bottom-burr adjustment system, cleaning and burr maintenance can be performed without losing your calibrated grind setting.

• 55mm Hardened Steel Flat Burrs
• Stepless Micrometric Adjustment
• Bottom Burr Adjustment System
• Excellent Espresso Particle Consistency

Fast, Quiet and Efficient Workflow

Every aspect of the Libra is designed to simplify the espresso routine. The adjustable hands-free fork accommodates virtually any portafilter without tools, while the included magnetic dosing funnel minimizes mess when grinding larger doses.

Its intuitive touch interface allows users to program two weight-based doses, grind continuously when needed, pause grinding, or even switch between programmed doses during operation without wasting coffee.

• Touch Display Interface
• Two Programmable Weight Doses
• Continuous Grinding Mode
• Adjustable Hands-Free Fork

Quiet Enough for Everyday Home Use

Eureka's Silent Technology significantly reduces grinding noise compared to conventional espresso grinders. Combined with the direct-drive motor and anti-vibration design, the Libra creates a noticeably quieter grinding experience without sacrificing speed or performance.

The ACE (Anti-Clumps & Electrostaticity) System further improves workflow by reducing static and clumping, producing cleaner, more even coffee distribution directly into the portafilter.

• Silent Technology
• ACE Anti-Clump System
• Reduced Static
• Cleaner Grounds Distribution

What Makes It Special?

• Patented Grind-by-Weight Technology: Automatically doses coffee by weight instead of grinding time.
• Instant Grind Weighing (IGW): Continuously measures coffee during grinding for exceptional consistency.
• Outstanding Dose Accuracy: Delivers approximately ±0.2g precision while minimizing coffee waste.
• 55mm Hardened Steel Burrs: Produce consistent espresso grinds with excellent particle uniformity.
• Stepless Micrometric Adjustment: Infinite grind adjustment for precise espresso dialing-in.
• Touch Display: Simple programming for single, double, and continuous grinding modes.
• Zero-Waste Features: Anti-vibration weighing system and automatic stop reduce unnecessary coffee loss.
• Adjustable Portafilter Fork: Quickly accommodates different portafilter sizes without tools.
• Silent Technology: Noise-reducing construction makes daily grinding more enjoyable.
• Chrome Finish: A polished appearance that complements premium home espresso setups.

Specifications

• Brand: Eureka
• Model: Mignon Libra 55
• Finish: Chrome
• Grinder Type: Grind-by-Weight Espresso Grinder
• Burr Type: Flat Hardened Steel
• Burr Diameter: 55 mm
• Adjustment System: Stepless Micrometric
• Dosing System: Instant Grind Weighing (Patented)
• Weighing Accuracy: Approximately ±0.2 g
• Programmable Doses: 2 + Continuous Mode
• Display: Touch Display
• Portafilter Support: Adjustable Hands-Free Fork
• Bean Hopper Capacity: 300 g
• Motor: Direct Drive
• Motor Speed: 1350 RPM
• Motor Power: 310 W
• Grinding Capacity: 1.8–2.5 g/s (Espresso)
• ACE System: Yes
• Silent Technology: Yes
• Voltage: 110 V
• Dimensions (H × W × D): 17” × 4.75” × 7.5” / 430 × 124 × 192 mm
• Weight: 14.5 lbs / 6.5 kg

Warranty

• Parts: 1 Year Warranty
• Labour: 1 Year Warranty

Perfect For

• Espresso-focused home coffee stations.
• Users seeking weight-based dosing accuracy.
• Daily single and double-shot preparation.
• Owners of premium prosumer espresso machines.
• Coffee enthusiasts pursuing consistent extractions.
• Anyone upgrading from traditional timed grinders.

Why Choose the Eureka Mignon Libra 55?

The Mignon Libra removes one of espresso's biggest variables by replacing timed grinding with real-time weight measurement. Combined with Eureka's proven burr design, stepless adjustment system, quiet operation, and compact footprint, it creates a faster, cleaner, and more repeatable espresso workflow without adding unnecessary complexity. For home baristas seeking professional consistency, the Libra represents one of the most refined grind-by-weight solutions available.

Precision by weight. Consistency by design. Built for exceptional home espresso.