The YEH-120L is built around a 120mm flat-burr platform for serious home baristas, coffee labs and specialist coffee service where each dose is weighed and each recipe is intentional. Rather than a high-volume hopper grinder, it is designed for controlled single-dose preparation, with a 2000W brushless FOC motor, 300–2000 RPM speed control and compatibility with both blind and screw-hole 120mm flat burr formats.
Why You'll Love It
- 120mm flat-burr platform: A large-format foundation for users who want to explore advanced burr geometries and demanding light-roast recipes.
- Designed for single-dose work: Weigh each dose, change coffees easily and keep recipe development more controlled.
- Professional motor control: A 2000W brushless FOC motor provides a 300–2000 RPM range for testing workflow and speed preferences.
- Flexible burr format: Designed for compatible 120mm flat burrs in both blind and screw-hole configurations.
- Stepless adjustment: The 0–200 scale supports close changes when moving between espresso and filter recipes.
- Low-retention goal: The coffee path is specified for less than 0.1g retention under intended operating conditions.
YEH-120L Single‑Dose Grinder
- 120mm flat burrs, 0.02mm grind resolution
- Near-zero retention – no stale grounds carryover
- 300–2000 RPM continuously variable speed
- 2000W stepless motor – easily grinds coffee beans
Precision Engineering
Near-Zero Retention (≤0.1g)
Engineered as a true single-dose commercial-grade powerhouse with an efficient anti-static setup to eliminate ground retention and static flying.
Precision Adjustment
Micron-Level Alignment (≤0.015mm)
Equipped with a high-rigidity, independent angular contact bearing spindle to achieve a microscopic internal runout variance of ≤0.015mm.
Compatible Burrs
Massive 120mm Burr Compatibility
Designed for elite-tier 120mm flat burrs (supports both blind and screw-hole configurations), providing exceptionally fast grinding speed and an incredibly clean cup profile.
Why Choose a 120mm Flat Burr Grinder?
A 120mm flat burr grinder gives users access to a large-burr platform with room for different burr geometries and flavor profiles. The YEH-120L supports both blind and through-hole 120mm burr designs, allowing experienced users to configure the grinder for espresso, filter, or all-purpose grinding.
Combined with variable speed, stepless adjustment, and a low-retention single-dose workflow, the YEH-120L is designed for users who want more control over burr selection and grind settings.
Compare the YEH-98L 98mm flat burr grinder, browse our coffee grinders, or explore our SSP Burr Guide for more on burr selection.
Detail
| Scale System | 0~200 increments of stepless adjustment |
| Coffee Grinder Burrs | 120mm Flat Burr |
| Speed Adjustment | 300-2000rpm |
| Grinding Residue | ≤0.1g |
| Power Supply | 220V, 50/60Hz |
| Bean Capacity | 25~30g |
| Size | 270x180x360mm |
| Weight | 18.5kg |
| Color | Silver / Black |
How do I adjust the grinding fineness on the YEH-120L?
The YEH-120L features an ultra-precise stepless adjustment dial.
Turn the dial clockwise (toward the right) for a coarser grind (e.g., Pour-over, Cold Brew).
Turn the dial counter-clockwise (toward the left) for a finer grind (e.g., Espresso, Turkish coffee).
Note: Please ensure the motor is running when adjusting to a finer setting if there are beans inside the grinding chamber, to prevent the burrs from locking.
How often should I clean the grinder?
A full deep clean is recommended every 15 days. Unplug first, detach the powder spout and hopper, unscrew the 4 top bolts with the included hex key, and lift the upper section to expose the burrs. Clean with the included brush or a small vacuum. Wipe mating surfaces before reassembling.
Why do I sometimes see static or flying chaff?
The YEH-120L includes an anti-static design to help reduce static during grinding. However, very dry environments, light-roasted coffee, and low ambient humidity can still cause some static or chaff.
Keep the chute and grinding chamber clean and use the press-blow hopper after grinding to help maintain a cleaner single-dose workflow.
Does the grinder require calibration after I take it apart for cleaning?
No. Thanks to our patented quick-leveling and independent spindle design, the grinder automatically snaps back into its factory micron-level alignment upon reassembly. You only need to remove 3 screws to detach the components for cleaning, and once reassembled, the zero point and alignment remain perfectly locked—no tedious manual calibration required.
What should I do if the grinder suddenly stops or the motor jams (Burr Lock)?
If the grinder stops due to extra-hard beans or an overly fine setting:
Immediately turn off the power switch and unplug the machine.
Turn the adjustment dial clockwise to a coarser setting.
Plug it back in, turn it on, and let the motor clear the remaining grounds.
If it remains jammed, follow the manual instructions to safely remove the upper burr carrier and clear the blockage.
How do I properly clean and maintain the grinder?
Daily Cleaning: Use the included press-to-blow bean hopper (bellows) at the end of your grinding cycle to purge any residual loose grounds. Clean the powder chute with the provided brush.
Deep Cleaning: Remove the four screws to access the burr chamber. Use a brush or dry cloth to clean the burrs and grinding chamber.
CRITICAL SAFETY NOTE: Never wash any part of the grinder body, chamber, or burrs with water. Water will damage the precision bearings, rust the steel components, and pose a severe electrical hazard.
Is the YEH-120L compatible with third-party burrs?
Yes. The YEH-120L is engineered with a highly versatile carrier that natively supports standard 120mm flat burrs, including both blind burrs (screwless surface) and traditional screw-hole configurations (such as standard Lebrew 120, SSP 120HU, or SSP 120LS).
Why is there a slight static cling or flying chaff, and how can I fix it?
Although the grinder features built-in anti-static engineering, ambient humidity and bean roast levels can still cause static. We highly recommend using the RDT (Ross Droplet Technique): slightly misting your coffee beans with a single drop of water or using a damp stir stick before grinding will completely eliminate static and flying chaff.
Can I use this grinder for commercial environments?
Yes. The YEH-120L is designed for professional single-dose workflows in specialty coffee shops, coffee labs, roasting facilities, tasting rooms, and premium coffee bars.
It is best suited to environments that weigh individual doses, switch coffees frequently, or develop recipes rather than high-volume hopper-based batch grinding.