Eureka Mignon Libra 55 GBW Grinder White | ACE Coffee Roasters

Eureka Mignon Libra 55 Grind-by-Weight Espresso Grinder

Precision Grinding by Weight. Professional Espresso at Home.

ACE Coffee Roasters proudly presents the Eureka Mignon Libra Grind-by-Weight Espresso Grinder—an innovative home espresso grinder that combines Eureka's renowned grinding performance with integrated Grind-by-Weight (GBW) technology. Designed for home baristas who demand exceptional accuracy, consistency, and workflow, the Libra delivers precise doses by weight directly into your portafilter, eliminating the guesswork associated with traditional timed grinding.

Built in Italy and engineered for years of dependable performance, the Eureka Mignon Libra features commercial-quality components in a compact footprint that perfectly complements today's premium espresso machines.

Grind by Weight Technology

Unlike conventional espresso grinders that rely on timed dosing, the Eureka Mignon Libra continuously weighs coffee during the grinding process using its integrated precision scale. The result is exceptional dosing accuracy, reduced coffee waste, and improved shot-to-shot consistency.

Eureka's patented Instant Grind Weighing (IGW) technology provides:

• Real-time grind-by-weight dosing
• Exceptional consistency from shot to shot
• Reduced coffee waste
• Faster workflow with no external scale required
• Automatic interruption if the portafilter is removed during grinding

The Libra arrives factory-calibrated and is ready to use immediately.

Professional Grinding Performance

At the heart of the Libra are 55 mm hardened steel flat burrs treated with Eureka's exclusive Diamond Inside® technology. This cryogenic hardening process significantly increases burr durability while maintaining exceptional grind quality over an extended service life.

Combined with Eureka's stepless micrometric adjustment system, the Libra offers virtually unlimited grind adjustment, allowing precise espresso dialing for every coffee.

Stepless Micrometric Adjustment

The oversized adjustment knob provides effortless micro-adjustments without stepped settings. Whether changing coffee origins or fine-tuning extraction, adjustments are smooth, precise, and highly repeatable.

Quiet Operation

Eureka's exclusive Silent Technology reduces grinding noise by approximately 20 dB compared to conventional grinders, making the Libra one of the quietest espresso grinders in its class—ideal for early mornings and shared living spaces.

Universal Adjustable Portafilter Fork

The adjustable hands-free fork accommodates virtually every commercial and home espresso portafilter, allowing comfortable, stable, and accurate grinding directly into the basket.

ACE Anti-Clumping System

Eureka's proven ACE (Anti-Clumps & Electrostaticity) System minimizes static and clumping while promoting clean, even coffee distribution for improved extraction consistency and a cleaner countertop.

Intuitive Touch Display

The modern touch interface allows quick programming of:

• Single dose by weight
• Double dose by weight
• Continuous grinding mode

Programming is simple, responsive, and intuitive.

Built for Everyday Reliability

With its powerful 260-watt motor operating at 1,350 RPM, the Libra delivers consistent grinding performance while maintaining low heat transfer to preserve coffee flavour and aroma.

The 300 g bean hopper provides ample capacity for daily home use while maintaining the compact footprint that has made the Mignon series one of the world's most popular premium home grinders.

Why Buy the Eureka Mignon Libra from ACE Coffee Roasters?

ACE Coffee Roasters specializes in premium home espresso equipment backed by knowledgeable support and real-world espresso experience. Whether you're upgrading your home coffee station or pairing the Libra with a high-end espresso machine, our team can help you achieve exceptional espresso with expert guidance before and after your purchase.

The Eureka Mignon Libra represents one of the most significant advances in home espresso grinding, combining commercial-grade burrs, real-time grind-by-weight technology, and legendary Italian craftsmanship in a compact, elegant design built for years of precision performance.

Features

• Integrated Grind-by-Weight technology
• Eureka Instant Grind Weighing (IGW) system
• 55 mm hardened steel flat burrs
• Diamond Inside® burr treatment for extended burr life
• Stepless micrometric grind adjustment
• Silent Technology for quiet grinding
• ACE Anti-Clumping & Anti-Static System
• Adjustable universal hands-free portafilter fork
• Touchscreen controls
• 300 g bean hopper
• Factory calibrated weighing system
• Made in Italy

Libra 55 Specifications