Overview
The Moccamaster KM5 is the Dutch brewer manufacturer first dedicated grinder, designed to pair perfectly with their legendary batch brewers. The 49mm flat burrs are optimized for the medium-coarse grinds that Moccamaster brewers require, and the build quality reflects the same handmade Dutch craftsmanship that makes Moccamaster brewers legendary. The KM5 is a natural companion for Moccamaster owners who want matching quality and design in their grinder. For filter coffee enthusiasts invested in the Moccamaster ecosystem, the KM5 completes the setup.
The Moccamaster KM5 Burr Grinder features a 49mm flat burr set, crafted from steel. The burrs spin at 1200 RPM, offering fast grinding for high-volume use. Grind retention is approximately 1.5g, typical for a hopper-fed workflow.
At $299, the Moccamaster KM5 Burr Grinder is aimed at home baristas seeking a solid grinder without a premium price tag. With a 300g hopper, it's designed for a traditional hopper-fed workflow. The flat burr design produces a more uniform particle distribution, prized for clarity and sweetness in the cup.
The Moccamaster KM5 Burr Grinder is weighing 3.5 kg, manufactured in Netherlands, powered by a 150W motor. Its footprint measures 140 x 210 x 350 mm (W×D×H).
Pros & Cons
Pros
- Capable 49mm burr set provides good grind quality for espresso
- Flat burr geometry produces highly uniform particle distribution, prized for clarity and sweetness in espresso
- Well-regarded in the home espresso community for consistent grind quality in its price bracket
Cons
- Stepped grind adjustment may not allow fine enough tuning between settings for espresso
- Not optimized for single dosing — hopper-fed design may result in some grind exchange between doses
Full Specifications
| Brand | Moccamaster |
|---|---|
| Model | Moccamaster KM5 Burr Grinder |
| Category | Flat Burr |
| Country of Origin | Netherlands |
| Year Introduced | 2023 |
| Burr Size | 49 mm |
| Burr Material | Steel |
| Burr Type | 49mm flat |
| Grind Speed | 1200 RPM |
| Retention | 1.5 g |
| Single Dose | No |
| Stepless Adjustment | No |
| Hopper Capacity | 300 g |
| Motor Wattage | 150 W |
| Dimensions (W x D x H) | 140 x 210 x 350 mm |
| Weight | 3.5 kg (7.7 lbs) |
| MSRP | $299 |
Our Verdict
The Moccamaster KM5 Burr Grinder uses flat burrs, which are the preferred geometry for espresso among competition baristas and specialty coffee professionals. Flat burrs produce a more unimodal (uniform) particle distribution, which translates to cleaner, sweeter espresso with more clarity than conical alternatives. At under $500, it's an accessible entry into flat burr grinding. Pair it with a machine that does justice to the grind quality, and you'll taste the difference in every shot.
Frequently Asked Questions
Can the Moccamaster KM5 Burr Grinder grind fine enough for espresso?
Yes, the Moccamaster KM5 Burr Grinder is capable of grinding fine enough for espresso. You may need to experiment with the stepped settings to find the sweet spot for your beans.
Why choose flat burrs in the Moccamaster KM5 Burr Grinder?
Flat burrs produce a more uniform (unimodal) particle distribution compared to conical burrs. This translates to cleaner, more transparent espresso flavors with pronounced sweetness and clarity. Many competition baristas and specialty roasters prefer flat burr grinders for this reason.
How do I maintain the Moccamaster KM5 Burr Grinder?
Clean out retained grounds after each use with a brush or bellows. Deep clean the burrs every 2-4 weeks by removing them and brushing away oil buildup. For the motor, occasional use of grinder cleaning tablets (like Grindz) helps remove coffee oil buildup. Never wash burrs with water.