Eureka Mignon Libra: Grind-by-Weight Home Espresso Grinder

The Eureka Mignon Libra is a home espresso grinder with built-in grind-by-weight technology. It uses 55mm flat steel burrs and a precision load cell to deliver exact doses directly into your portafilter. Stepless micrometric adjustment lets you dial in for espresso, drip, or other methods. Silent Technology keeps noise low. The touchscreen display and compact footprint make it ideal for modern kitchens where precision and space matter.

At $599, the Libra competes with the Baratza Sette 270Wi, which also has weight-based dosing but uses conical burrs and a noisier design. The Libra’s flat burrs and Italian build appeal to users who want traditional espresso grinding with modern convenience. It costs more than entry-level timed grinders but delivers accuracy that saves coffee and improves consistency over time.

The 300 gram hopper holds enough beans for multiple shots without constant refilling. The anti-clump system reduces static and keeps grounds fluffy. The compact body fits most countertops without dominating the space. For home baristas who want cafe-level precision without a separate scale, the Libra is a compelling option.

What Is the Eureka Mignon Libra

The Eureka Mignon Libra is a flat burr espresso grinder from Eureka, an Italian based company. It sits in the Mignon lineup between the entry-level Mignon Silenzio and the premium Mignon Specialita. The Libra adds a built-in scale for weight-based dosing, a feature rare in home grinders under $1,000.

The 55mm flat steel burrs produce uniform particles for balanced extraction. The load cell measures grounds in real time and stops the motor at your target weight. This eliminates the drift that affects timed grinders when bean density or humidity changes.

The stepless micrometric adjustment uses a worm gear for infinite precision. You can make changes smaller than the width of a hair. This is essential for espresso, where microscopic shifts in grind size change shot timing by seconds.

Silent Technology insulates the motor and grinding chamber. The result is quiet operation suitable for early mornings or shared spaces. The touchscreen display shows current weight, target dose, and grind setting. Navigation is simple and responsive.

What’s Included

• Eureka Mignon Libra grinder
• 300 gram bean hopper with lid
• Portafilter fork
• Grounds catch tray
• Power cord
• User manual

Key Features

Grind-by-Weight Dosing

Built-in load cell measures grounds in real time. Motor stops at target weight. No timer drift. No separate scale needed.

55mm Flat Steel Burrs

Uniform particle size for balanced extraction. Durable and long-lasting.

Stepless Micrometric Adjustment

Infinite grind settings via worm gear. Precise dialing for espresso and other methods.

Touchscreen Display

Shows weight, dose target, and setting. Simple navigation.

Silent Technology

Sound-insulated motor and chamber. Quiet enough for home use.

Anti-Clump System

Reduces static and clumping. Grounds fall fluffy and even.

300 Gram Hopper

Multiple doses without constant refilling.

Compact Design

Fits modern kitchens without dominating counter space.

Specification

Daily Workflow

1. Weigh 18 to 20 grams of beans
2. Add to the 300 gram hopper
3. Set your target weight on the touchscreen
4. Insert portafilter into the fork to start grinding
5. The grinder stops automatically at your target weight
6. Remove portafilter, distribute, tamp, and pull your shot
7. Tap the catch tray to clear any loose grounds

1. Weigh 20 to 30 grams of beans
2. Adjust the stepless dial slightly coarser than your espresso setting
3. Set your target weight on the touchscreen
4. Grind into the portafilter or a dosing cup
5. Transfer grounds to your brewer and proceed

1. Weigh your dose
2. Adjust the dial to the coarse end of the range
3. Set your target weight
4. Grind and brew

1. Empty any remaining beans from the hopper
2. Brush the burr chamber if needed
3. Wipe the touchscreen with a dry cloth
4. The anti-clump system keeps static minimal, so mess stays low

Comparison with Similar Grinders

Libra vs Specialita

Both are Mignon grinders with 55mm flat burrs and Silent Technology. The Specialita uses timed dosing. The Libra adds grind-by-weight with a built-in scale. The Specialita costs more at $649. The Libra costs more at $599 and eliminates timer drift.

Choose the Specialita if you calibrate often and want to save money. Choose the Libra if you want exact weight dosing without a separate scale.

Eureka Mignon Libra vs Baratza Sette 270Wi

The Baratza Sette 270Wi also has grind-by-weight. It uses 40mm conical burrs and a direct-drive motor. It is faster but louder. The design is more modern and minimal. It typically costs around $549.

The Libra uses 55mm flat burrs, which many espresso purists prefer for particle shape and extraction balance. It is quieter. The Italian build feels more traditional.

Choose the Sette 270Wi if you want speed, modern design, and lower price. Choose the Libra if you want flat burrs, quiet operation, and Italian craftsmanship.

Who Should Buy

• You want grind-by-weight accuracy without a separate scale
• You drink espresso daily and value consistency
• Quiet operation matters for your home
• You want Italian build quality under $1,000
• You have limited counter space

• Budget is under $400 (look at Specialita or Silenzio)
• You need true commercial volume
• You want single-dose workflow with minimal retention (look at Mignon Zero)
• You drink mostly drip or French press (flat burrs work but are optimized for espresso)

FAQ

1. How accurate is the grind-by-weight system?
   Typically within 0.1 grams of target dose. The load cell measures in real time during grinding.
2. Is the Libra good for espresso?
   Yes. It is designed for espresso with precise grind control and weight-based dosing.
3. Can it grind for drip or French press?
   Yes. The stepless adjustment goes coarse enough. It is optimized for espresso but handles other methods.
4. Is it noisy?
   No. Silent Technology makes it one of the quieter grinders in its class.
5. How big is the hopper?
   300 grams. Enough for multiple shots without constant refilling.
6. Does it retain grounds?
   Minimal retention for a hopper-based grinder. The anti-clump system helps.
7. Is the touchscreen easy to use?
   Yes. Simple icons show weight, target, and settings. Most users learn it quickly.
8. How often should I clean it?
   Brush the chamber weekly. Use grinder cleaning tablets monthly. Deep clean every 6 months.

The Eureka Mignon Libra brings grind-by-weight precision to home baristas who want cafe-level consistency without cluttering their counter with separate scales and timers. Its 55mm flat steel burrs, stepless micrometric adjustment, and built-in load cell deliver exact doses directly into your portafilter every time.

If you want weight-based dosing with Italian build quality and flat burr extraction, this grinder earns its place on your counter.