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 Jul 22 - Jul 24
Other countries and regions: Estimated delivery by Jul 27 - Jul 31

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 a range of coffee grinders tailored to different brewing needs and environments. Here’s a quick reference to help you choose the right model:

Geimori GU78

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

- High-performance construction designed for frequent grinding.

- Powerful and consistent performance during busy service periods.

- Advanced grind control for improved precision and workflow efficiency.

- Sleek, professional design that complements modern cafés and coffee bars.

 

Geimori GU64

Best for: Home baristas seeking clarity, consistency, and flat-burr performance.

- Flat burr design delivers consistent grounds and excellent flavor clarity.

- BLDC motor provides smooth, stable, and efficient grinding.

- Precise grind adjustment for espresso, pour-over, and everyday brewing.

- Compact yet sturdy design for home kitchens and dedicated coffee bars.

 

Geimori GU63

Best for: Home baristas seeking precise and versatile grinding for espresso and filter coffee.

- 63 mm conical burrs deliver balanced sweetness, body, and flavor clarity.

- Low-speed 115 RPM grinding helps reduce heat and preserve coffee aroma.

- 85-step adjustment provides precise control across different brewing methods.

- Plasma anti-static technology helps reduce static and keep your workspace cleaner.

- Low-retention, single-dose design makes switching between coffee beans easier.

- Tool-free disassembly simplifies cleaning and regular maintenance.

 

Geimori GU38

Best for: Everyday home brewing, smaller kitchens, and compact coffee setups.

- Compact footprint fits easily into apartments, kitchens, and small coffee bars.

- Near-zero-retention design helps reduce waste and preserve coffee freshness.

- Stepless grind adjustment allows precise dialing-in for different recipes.

- Low-speed 110 RPM grinding supports consistent particle distribution.

- Simple controls and easy maintenance make it suitable for daily use.

 

Geimori T38

Best for: Travel, camping, commuting, and cordless coffee brewing.

- Palm-sized, lightweight design is easy to carry and store.

- 38 mm six-axis conical burrs provide quality grinding from espresso to pour-over.

- Stepless adjustment offers flexible control for different brewing methods.

- Built-in 3600 mAh battery supports true cordless grinding.

- USB-C charging makes it convenient to recharge at home or on the road.

- Durable construction is designed for travel without compromising grind quality.

 

Geimori T38 Plus

Best for: Compact home setups, offices, hotel rooms, and portable plug-in brewing stations.

- Compact, space-saving design is suitable for smaller environments.

- 38 mm conical burrs provide consistent grinding from espresso to pour-over.

- Stepless adjustment allows precise control for different coffee recipes.

- Plug-in power provides stable performance without battery limitations.

- Quiet operation makes it suitable for homes, offices, and shared spaces.

- A practical choice for users who want compact size with dependable wired power.

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