Geimori GU38 Coffee Grinder | Compact Single Dose Grinder

$179.99
$249.99
SAVE 28%

 2-Year Warranty ·  30-Day Return Policy ·  Secure Checkout

 

Compact, precise, and effortless.

A slim single-dose grinder for home brewers who want precise grinding in a smaller footprint — from daily filter coffee to espresso-style dialing.

Key Features:
• 3.5-inch ultra-slim metal body
• 38mm 6-axis conical burr with stepless adjustment
• Low-retention workflow powered by a 96W motor

Plug & Voltage:
Supports 100–240V, 50/60Hz. A region-matched plug is included based on shipping destination.

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Quantity

Get Extra $10 OFF, Use the Code: CODE10

United States, United Kingdom, Australia & Japan: Estimated delivery by Aug 06 - Aug 08
Other countries and regions: Estimated delivery by Aug 11 - Aug 15

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

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