YEH-98L · Single Dose Coffee Grinder
The flat burr grinder
built for obsessive
precision.
98mm flat burrs. 2000W FOC motor. Stepless 0–200 grind adjustment at 5 microns per click. Built for espresso, pour-over, and everything in between — with ≤0.1g retention and virtually no static.
Single Dose DesignGrind only what you need
Patent Leveling SystemSwap burrs without recalibrating
Low Static OutputNo water, no ionizer needed
12-Month WarrantyFull support included
Aluminum Alloy Body15× better heat dissipation than steel
Core Engineering
Every detail engineered for
the serious home barista.
The YEH-98L isn't a lifestyle grinder. It's a precision instrument — designed around the principles that drive professional café equipment, scaled for the single-dose workflow.
Precision Angular Contact Spindle
An independent spindle built with precision angular contact bearings delivers micron-level runout tolerance. Consistent burr gap means consistent particle distribution — every single dose.
Micron-level runoutPatent Quick-Level Mechanism
The internal leveling mechanism is factory-set and stays fixed through burr changes and cleaning — no recalibration required. Disassemble the top in seconds with four screws.
Zero recal on burr swap2000W In-House FOC Motor
A custom-wound brushless motor with Field-Oriented Control keeps torque stable from 300 to 2000 RPM — no speed sag under load. Tune RPM for espresso density or pour-over clarity.
FOC · 300–2000 RPMStepless 0–200 Grind Adjustment
Each click moves the burr gap by exactly 5 microns. Dial in espresso at setting 3 or open up to 10–11.5 for pour-over. The full 200-step range covers Turkish to cold brew.
5μm per click≤0.1g Retention — By Design
Single-dose grinding demands near-zero retention. The YEH-98L's internal geometry and low-static output channel keep waste under 0.1g without fans, water sprays, or ionizers.
True single doseAluminum Alloy + SUS304 Construction
The integrated aluminum body dissipates heat 15× faster than stainless steel, protecting grind temperature and flavor. Internal burr seats are SUS304 for longevity and food safety.
Thermal controlGrind Precision
0.01–0.02mm accuracy.
5 microns per click.
The finest espresso grinders on the market move in increments of 10–20 microns. The YEH-98L moves in 5. That's the difference between chasing a shot and dialing one in.
The "coarse → fine" adjustment principle applies: always approach your target from the coarser side, reducing in small steps for the most precise and repeatable positioning.
- 0–200 stepless scale — no numbered click stops to skip over
- Factory zero-point set as burr-touch position for safety reference
- Adjust grind size while running at lowest RPM for accurate feel
- Light roasts: go finer; dark roasts: go coarser — from the same base
Burr Compatibility
One grinder. Every brewing method.
The YEH-98L ships with the Lebrew 98 magnetic blind burr and is compatible with a broad ecosystem of 98mm and 102mm flat burr options.
Lebrew 98 Espresso
IncludedThe standard magnetic blind burr. Optimized for Italian-style espresso shots with dense, saturated body and classic sweetness.
ESPRESSO · MOKA · RISTRETTO
Lebrew 98 Filter
IncludedHand-pour optimized burr geometry. Enhanced clarity and brightness for V60, Chemex, Kalita, and other filter methods.
POUR OVER · DRIP · AEROPRESS
98-LC Curved (Medium)
IncludedThe balanced option — medium-shallow roast profile. Bridges espresso and filter with a versatile grind character.
MILK DRINKS · MEDIUM ROAST
98/102mm Flat Burrs
CompatibleBoth magnetic and keyed (holed) burr formats are supported. Switching to 102mm burrs requires an adapter seat (available separately).
UPGRADE PATH
SSP 98 Series
CompatibleSupports SSP 98hu / lu / ultra / ls / brew burr sets for those who want to go further. SSP burrs are widely regarded as a top-tier aftermarket upgrade.
HIGH-UNIFORMITY · COMPETITION
Magnetic Quick-Swap
SystemThe magnetic blind burr system enables burr swaps in under a minute — no alignment tools needed, no recalibration required after reinstallation.
FAST SWAP · ZERO RECAL
Drive System
2000W. FOC controlled.
Built in-house.
Most grinders at this price use off-the-shelf motors running open-loop. The YEH-98L runs a custom-wound brushless motor paired with FOC (Field-Oriented Control) — the same principle used in industrial servo drives.
The result is constant torque across the full RPM range. Whether you're pulling a 20g espresso at 1200 RPM or running a pour-over dose at 400 RPM, the burrs don't slow down mid-grind.
Grind Guide
Recommended settings for
every brewing style.
These are starting points for the included Lebrew 98 burr. Adjust by 0.5–1 setting at a time and note that light roasts generally grind finer, dark roasts coarser at the same dial position.
| Brew Method | Grind Setting | RPM Range | Notes |
|---|---|---|---|
| Espresso (Italian) | ~3Standard dial | 1000–1500 RPM | Dense, low-void grind. Fine-tune extraction time in 0.5 increments. |
| Espresso (Medium–Light) | ~2–4Adjust for roast | 1200–1600 RPM | Light roasts extract faster — go finer. Expect longer dial-in with new coffees. |
| Moka Pot | ~4–6Between espresso/filter | 800–1200 RPM | Slightly coarser than espresso prevents channel pressure buildup. |
| Pour Over / V60 | ~10–11.5Hand-pour range | 200–700 RPM | Lower RPM preserves clarity and brightness in filter cups. Adjust for flow rate. |
| French Press | ~14–16Coarse | 300–600 RPM | Coarser grinds reduce fines in the cup. Use lower RPM for even particle distribution. |
| Cold Brew | ~16–20Very coarse | 300–500 RPM | Long steep time (12–24h) calls for very coarse grind to avoid over-extraction. |
Technical Specifications
Full spec sheet.
Cleaning & Maintenance
15 minutes, every 15 days.
The YEH-98L is built to be cleaned — not just used. Four screws give you full access to both burrs and the grind chamber. No tools beyond the included hex key set.
Disconnect Power
Unplug the power cable from the rear panel before touching any components.
Remove Top Components
Detach the press-air hopper and discharge chute from the body.
Remove 4 Screws
Use the included hex key to remove the four top screws, exposing the full burr assembly.
Clean Burrs & Chamber
Use a small brush or handheld vacuum to clear all grind residue. Wipe mating surfaces with a dry cloth.
Reassemble
Align the top section vertically and lock down four screws. Reattach chute and hopper.
After-Sales Service
We stand behind the machine.
12-Month Full Warranty
All manufacturing defects covered for 12 months from purchase — including motor failure, switch faults, and abnormal grinding performance. Consumables are not covered by warranty.
Free Repair
During the warranty period, customers can enjoy free repair services.
Lifetime After-Sales
Even after warranty expiry, Provides paid repair service with genuine parts. Service hours: Mon–Fri, 9:00–18:00.
In the Box
Everything you need to start grinding.
YEH-98L Grinder Body
× 1
Discharge Chute
× 1
Press-Air Hopper
× 1
Grounds Cup
× 1
Power Cable
× 1
Cleaning Brush
× 1
Hex Key Set
× 1 set
Magnetic Burr Removal Tool
× 1
YEH-98L
Ready to grind precisely?
The YEH-98L is built for baristas who believe every gram matters. Available in Full Black and Silver-Black.