Geimori GU38

Precision in Simplicity

Geimori GU38

Precision in Simplicity

Geimori GU38 Single Dose Coffee Grinder, Electric Burr Coffee Grinder with 38mm Conical Burrs, Stepless Adjustment, Zero Retention

$179.99
$399.99
SAVE 55%

Simple Workflow | 3.5" Ultra-slim Profile | 96W High-Efficiency Motor | Stepless Adjustment | 38mm 6-Axis Conical Burr | Zero Retention | Metal Build Body

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United States: Estimate start shipping from Mar 30 - Apr 01
Other countries and regions: Estimate start shipping from Apr 04 - Apr 08

See What the Pros Say

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Zero Retention

The GU38’s zero-retention design ensures minimal leftover coffee (<0.1g with RDT), delivering a fresher, more flavorful cup every time. 

Precision 38mm 6-Core Conical Burr

Made from high-nitrogen SUS420 stainless steel (HRC58 hardness), the 38mm conical burr with 6-core design delivers uniform particle size, durability, and consistent coffee extraction for espresso, pour-over, and more.

Stepless Micron Adjustment

Fine-tune your grind with 65 stepless settings and 0.01mm micro-adjustments. From rich espresso shots to clean pour-overs, achieve the perfect grind size with absolute control.

Tech Specifications

Grinding Performance

Grinding Speed (RPM): 190RPM

Electrical Specifications

Rated Power: 96W

Voltage: 100-240V AC 50/60Hz

Materials

Burrs: 38mm Conical Burrs

Motor: 100W High-Efficiency Motor

Hopper Capacity: 30g

Dosing Cup: 54mm Aluminum Alloy Cup

Dimensions & Weight

Width: 160mm

Length: 92mm

Height: 314mm

Net Weight: 3KG

Color: Black, White

Frequently Asked Questions

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How do I pick the right Geimori Coffee Grinder for my needs?

Geimori offers three models tailored to different needs. Here’s a quick reference for your purchase:

Geimori GU78

Best for: Cafés, offices, and high-demand environments.

- High-performance durability for frequent use.

- Advanced functionality for precision and efficiency.

- Sleek, professional design that fits all coffee settings.

 

Geimori GU64

Best for: Daily home use

- Balanced performance for daily tasks.

- User-friendly operation with easy maintenance.

- Compact yet sturdy design for kitchens or coffee bars.

 

Geimori GU38

Best for: Travels and small spaces

- Ultra-lightweight and portable design.

- Space-saving and energy-efficient.

- Durable enough for trips without sacrificing performance.

 

Geimori T38 / T38 Plus
Best for: Travel, camping, and on-the-go brewing.

Palm-sized and ultra-portable.

Pro-grade grind quality for espresso to pour-over.

Durable construction designed for trips without compromise.

T38 model: Long-lasting battery with USB-C charging for true cordless convenience.

How do I achieve "Zero Retention"?

The straight-through design minimizes retention naturally. For the best results, we recommend two simple pro tips: 1) Use the "RDT" to eliminate static, and 2) Press the hopper bellows at the end of the grind to purge any remaining particles.

Is the stepless adjustment difficult for beginners to dial in?

The GU38 offers 0.01mm professional precision, which allows you to find the exact "sweet spot" for espresso that stepped grinders often miss. While there is a slight learning curve to find your perfect setting, the reward is superior flavor clarity.

How consistent is the grind?

Thanks to the 38mm 6-Core CNC Stainless Steel Burrs (HRC58), it delivers pro-level particle distribution comparable to much pricier units. The high-nitrogen steel burrs stay sharp for years, delivering uniform grounds from espresso to French press.

Can the GU38 grind fine enough for professional espresso machines?

Yes. Its 0.01mm stepless adjustment offers the extreme precision required for professional espresso. The 38mm 6-core CNC burrs produce highly uniform fine grounds, ensuring ideal resistance for perfect 9-bar extraction and rich crema.

Do I need tools to clean the grinder?

No tools needed. The tool-free design allows you to access the burrs in seconds for deep cleaning. We include a professional brush to remove residue and prevent flavor cross-contamination, keeping your grinder pristine.

Instructional Videos

Customer Reviews

Based on 18 reviews
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A
Andrés
A high-precision grinder

Discover excellence in every grind with the Geimori GU38 electric grinder from Wirsh. Its all-metal body, with wooden details, not only provides a modern aesthetic, but also an incomparable robustness, a piece built to last. The 96 W motor delivers quiet and efficient performance that preserves the aromas of coffee in each bean. The high-precision 38 mm CNC conical wheel system ensures total consistency, from fine coffee for espresso to coarse-grained grinding for French press. In addition, its continuous non-stop adjustment allows you to fine-tune each grind with absolute accuracy.

This grinder combines elegance, durability and professional precision in a single piece of equipment designed for those who value the quality of the coffee in each cup.

K
KayaJinx
Awesome grinder so far.

I bought this grinder after watching a YouTube review. I was using a very good hand grinder and developed tennis elbow. I wanted something to rest my arms and was low on funds. I'm so glad I got it. It looks really nice, it's very sturdy, it's quiet and grinds nicely. It has some benifits over my $600+ broken grinder. I like that it can be turned on before adding beans, I like the wooden top. I have an old Faema that likes the grind very fine and it handled it with ease . Not a fan of the popcorn shield because the beans get stuck, I also didn't like the material the bellows was made of, but that's very much personal preference. I used the bellows off my old machine instead. Grind setting is effortless, so smooth. It's such a great price and customer support was very responsive. Excellent purchase.

J
James
Geimori GU38 Grinder

Great product. This grinder is very compact and fast! I've been using for making coffee in espresso machine, moka, and Turkish pot, and the respective particles sizes are consistent and adequate for each method.

J
Jared
Sleek and simple

It’s quiet, consistent, and produces a really even grind that makes a noticeable difference in the quality of every cup. It works great for everything from pour over and drip to espresso, and it’s super easy to adjust. The build quality and design are also top notch.

D
Detlef
No complaints

The grinder makes a very high-quality impression (apart from the cap nut that holds the cone). The ground coffee is homogeneous and very easy to adjust. The grinder is very quiet and takes up little space. I am very impressed.