Varia VS4 Grinder
PREORDER PRODUCT - FIRST BATCHES SOLD OUT - SHIPS DECEMBER 19TH 2025.
EXPERIENCE PRECISION GRINDING LIKE NEVER BEFORE
The VS4 redefines your coffee ritual through the perfect balance of design precision and mechanical excellence.
Powered by a 200 W brushless motor with a planetary gearbox and variable RPM control (150–300 RPM), it delivers uncompromising consistency, torque, and control. At its core, a 53 mm 6-core conical burr set ensures exceptional uniformity and clarity in every grind — from espresso to cold brew, maintaining remarkable consistency throughout the grind range.
SUPERIOR BURR DESIGN
Precision-engineered 53 mm 6-core conical burrs deliver optimal particle-size distribution and refined flavor clarity across all brew methods. The geometry and alignment are optimized for balanced extraction and clean flavor definition.
POWERFUL & EFFICIENT
Driven by a 200 W brushless motor paired with a planetary gearbox, the VS4 maintains stable torque and smooth performance across variable speeds (150–300 RPM), offering fine-tuned control for every grind profile.
LOW RETENTION DESIGN
A patented single-piece removable burr chamber with a quick-connection bayonet system ensures low retention and effortless maintenance. The design minimizes grind waste and allows fast, tool-free disassembly while maintaining perfect alignment.
ROBUST HOPPER ADJUSTMENT
A stepless 10-micron adjustment system provides ultra-fine control from espresso to cold brew, maintaining high consistency throughout the grind range. An independent internal adjustment thread eliminates hopper drift, cross-threading, and wear — ensuring smooth, repeatable, and precise calibration every time.
ACTIVE IONISATION TECHNOLOGY
Integrated active ionisation neutralizes static and preserves coffee aromatics, delivering a cleaner, more uniform grind with reduced clumping.
ELECTRICAL SPECIFICATIONS:
Power Supply: AC 100-120V or 220-240 V, 50/60 Hz.
Motor: 200 W Brushless DC motor (high-torque, low noise design)
Motor Speed: Variable, 150–300 RPM (user adjustable)
Torque: 14.5 N·m at the burr (with planetary gearbox reduction)
Gearbox: Planetary gear transmission, metal gears (provides ~10:1 reduction for torque multiplication and consistent speed under load)
Thermal Protection: Internal temperature sensor with logic control – the grinder monitors motor/driver temperature and may pause operation to prevent overheating.
GRINDING SPECIFICATIONS:
Burr Type & Size: 53 mm conical burr set, stainless steel (heptagonal or multi-angle conical design for espresso & filter versatility). Factory burr is high-hardness tool steel (HRC ~58, high-nitrogen stainless).
Burr RPM: 150–300 RPM (user controlled, low RPM grinding minimizes heat and static).
Grind Adjustment: Stepless internal adjustment collar, finer = clockwise, coarser = anticlockwise.
Grind Scale: Marked scale from finest to coarsest. Factory calibration at “0” = burr touch point (do not grind at 0). Adjustment resolution ~0.01 mm per division (10 microns per indicated step). This allows for extremely fine adjustments.
Grind Range: Capable of grinding from Turkish/espresso fine (approx. 100–200 microns particle size) up to coarse French Press grind (1000+ microns). The total range is roughly 2.5 revolutions of the adjustment collar from zero to fully open (range may be indicated as 0–10 on the dial).
Recommended Use: Suitable for espresso, moka pot, pour-over, drip coffee, AeroPress, French press, and cold brew. (Note: very fine powdery Turkish grind is near the limit of adjustment but can be achieved by calibrating slightly past zero – caution is advised to avoid burr contact.)
CAPACITY & THROUGHPUT:
Hopper Capacity: 30~40 g of beans (designed for single dosing; use bellows to clear after each dose).
Grounds Bin Capacity: ~40 g (the included dosing cup can hold about 40 grams of ground coffee).
Grinding Speed: Approx. 1.5–2.0 g/second at medium grind setting and full motor speed. Espresso grind speed ~1 g/second (will vary with bean and setting). The planetary gearbox ensures consistent speed even under load of dense beans at fine grind.
Retention: <0.2 g with no RDT (dry) and <0.1 g with RDT or using bellows, on a 10 g dose (measured after seasoning). In practical terms, essentially zero retention due to vertical path and purge system.
Test conditions: 150RPM (45% humidity, 7 days rested medium/light roasted arabica blend). Results can differ depending on the coffee variety and roast degree of coffee used as well as the freshness/degassing status of the coffee and environmental factors.
CONSTRUCTION:
Dimensions (L × W × H): 161.4 mm × 97.7 mm × 337 mm (approximately 6.35” × 3.85” × 13.27”). The compact footprint saves counter space; height includes hopper and lid.
Weight: 5.27 kg (approximately 11.617 lbs). The substantial weight comes from the motor and metal construction, contributing to stability.
Materials: Aluminium alloy, Stainless Steel, Food-Safe Plastic, Food-Safe Silicone.
AC Cord Length: 1.2 m.
PACKAGE INCLUSIONS:
1 x Varia VS4 Grinder
1 x 58mm Dosing Cup
1 x 1.2m AC Cable
1 x Hopper Bellows
1 x RDT Spray Bottle
1 x Cleaning Brush
1 x Spare Parts Kit
1 x User Manual
1 x Sticker Set
PRODUCT APPEARANCE DISCLAIMER:
The VS3, VS4, and VS6 grinders are manufactured with precision using a combination of painted and anodised components. Due to the nature of these finishes and the production processes involved, slight variations may occur between individual units. These are normal and fall within Varia’s QC standards.
Painted Components - The exterior painted surfaces may exhibit small surface dots or marks up to 0.2 mm in diameter resulting from the body molding process. These minor cosmetic points are inherent to the finish and are considered acceptable within our quality control criteria.
Anodised Components - Parts such as the hopper surround, locking collar, lids, and other aluminium elements may show small inconsistencies. These characteristics can occur during the anodising process and the handling required to remove parts from coating fixtures. Slight colour variations between anodised components may also occur. These variations are normal and accepted under our QC standard.
Varia operates with strict QC thresholds to ensure high-performance, reliable products. Any of the above cosmetic characteristics do not affect functionality or performance and are considered within specification.
EXPERIENCE PRECISION GRINDING LIKE NEVER BEFORE
The Varia VS4 is the next evolution of single-dose grinding — combining a 200 W brushless motor, precision planetary gearbox, and a 53 mm 6-core conical burr system for exceptional consistency from espresso through filter.
A world-first single-body burr chamber, fully CNC-machined and anodised, delivers ultra-low retention and a clean, efficient workflow. Electrodynamic flow geometry guides coffee through the chamber with aerodynamic stability, ensuring smooth particle flow, minimal static, and predictable extraction.
PRECISION ENGINEERING THROUGH 76.5° SLOPED GEOMETRY
• The VS4 builds on Varia’s signature 76.5° sloped architecture, directing beans efficiently into the burrs while maintaining a near-vertical exit path for clean, consistent output.
This geometry reduces settling, optimises particle density, and supports true single-dose performance — forming the foundation for VS4’s speed, cleanliness, and grind uniformity.
PRECISION INDEPENDENT HOPPER ADJUSTMENT
• The VS4’s stepless 10-micron adjustment system provides ultra-fine control across the full grind range, enabling barista-level precision for every brew type.
• An independent internal thread mechanism eliminates cross-threading, hopper drift, and wear, guaranteeing smooth and repeatable adjustments that maintain their exact calibration over years of use.
• Each movement feels deliberate, secure, and perfectly damped — the tactile expression of mechanical integrity.
HOPPER QUICK-CONNECT SYSTEM
• The VS4 introduces a patented quick-connect hopper system, designed for instant, tool-free access to the grinding chamber.
• Using a precision-engineered bayonet mechanism, the hopper collar locks and releases with a 10 degree turn — granting complete chamber access in under one second.
• When disengaged, the system also automatically disconnects the power circuit between the motor and chamber assembly, ensuring absolute safety during cleaning or maintenance.
• Reconnection is equally simple: the hopper aligns and locks with a smooth, precise motion that restores full power and calibration instantly.
MODULAR DRIVE & CHAMBER ASSEMBLY
• The VS4 introduces a patented modular chamber and drive assembly, allowing the entire burr and driveshaft system to be removed from the grinder body in one seamless motion.
• The hopper quick-connect mechanism attaches and releases via a precision-engineered bayonet system. Once released, the entire burr chamber, drive shaft, and bearing assembly lift out as a unified module — laser-aligned, self-contained, and mechanically isolated from the motor housing.
• Because the burr alignment, shaft bearings, and chamber geometry exist as a single machined ecosystem, the VS4 maintains consistent concentricity and zero mechanical drift over time. Every reconnection re-establishes factory-grade accuracy — no recalibration, no misalignment, no compromise.
SUPERIOR BURR DESIGN
• The VS4 uses a 53 mm 6-core conical Supernova burr set, engineered for clarity, uniformity, and smooth particle flow.
• Its geometry has been meticulously modelled to balance cutting speed and particle flow, reducing resistance and ensuring even distribution across the entire grind range.
• Future-proof burr interface allows for upgradable burr sets releasing in early 2026 (installed with light disassembly).
POWERFUL BRUSHLESS MOTOR & PLANETARY GEARBOX
• The VS4’s 200 W brushless motor operates with near-silent efficiency, producing exceptionally smooth torque while minimizing mechanical vibration. Its planetary gearbox transfers power through a multi-gear reduction system, stabilizing rotation speed under load and maintaining constant burr performance at all times.
• This precision drivetrain ensures that torque delivery remains stable even when grinding dense light roasts or at finer espresso settings. Testing confirmed RPM stability within ±1.5% tolerance across the full speed range (150–300 RPM), translating directly into consistent particle size and predictable flavor outcomes.
ELECTRODYNAMIC FLOW GEOMETRY
• Every contour inside the chamber is shaped with Electrodynamic Flow Geometry, a proprietary surface topology engineered to guide ground coffee along a precise, turbulence-free path.
• This design prevents static charge accumulation and directs particles in a smooth, laminar flow — reducing friction, clumping, and waste.
• Combined with the fully anodised single-body chamber and grounds spindle, the result is an ultra-smooth surface with exceptionally low adhesion. Coffee moves freely through the grind path, maintaining consistent density and distribution from burr to chute.
• By pairing advanced chamber geometry with low-friction anodised surfaces, the VS4 achieves a level of consistency and cleanliness rarely seen in compact grinders — a precise orchestration of airflow, particle motion, and electrostatic control.
LOW RETENTION DESIGN
• The VS4 introduces a world-first, patented single-body burr chamber, CNC-machined from a single solid block of alloy and fully anodised for ultra-low material adhesion. This seamless construction eliminates part lines and joints, creating a continuous internal channel that optimises coffee flow and dramatically reduces grind retention.
• Every surface within the chamber — including the grounds spindle — is precision-milled and anodised to a micro-smooth finish, ensuring minimal static, near-zero coffee build-up, and exceptional long-term durability. Paired with Varia’s quick-connection bayonet system, the chamber can be removed tool-free for cleaning and instantly reinstalled with perfect alignment and calibration.
Tested Retention Figures (10 g dose):
Without RDT
• Espresso (Setting #3): 0.10–0.35 g
• Filter (Setting #10): 0.05–0.15 g-
With RDT
• Espresso (Setting #3): 0.00–0.06 g
• Filter (Setting #10): 0.00–0.02 g
Test conditions: 150RPM (45% humidity, 7 days rested medium/light roasted arabica blend). Results can differ depending on the coffee variety and roast degree of coffee used as well as the freshness/degassing status of the coffee and environmental factors. Bellows were used for test doses without RDT (3-4 pumps) and no Bellows were used for test doses with RDT.
RPM CONTROL
The VS4 uses a variable stepped RPM system that allows you to set your preferred grinding speed once — and lock it in.
With a single push, the grinder powers on and runs at the exact RPM you’ve selected. There’s no need to reset or re-adjust between doses. Your speed stays fixed, stable, and repeatable every time you grind.
This level of RPM stability does more than simplify workflow:
• It shapes fines production
Higher RPM can increase particle fracturing, while lower RPM produces a tighter, cleaner distribution. Fixed RPM ensures the same behaviour with every dose.
• It stabilises particle distribution
A controlled, predictable motor speed means consistent shear forces on the burrs — essential for clarity, sweetness, and repeatability across espresso and filter.
• It helps control retention
A uniform RPM reduces micro-vortex turbulence inside the chamber, supporting cleaner evacuation and more consistent low-retention performance.
DUAL-BEARING DRIVE SYSTEM
• Mechanical precision begins with perfect alignment.
• The VS4’s driveshaft is supported by a dual-bearing system — two precision bearings housed within the lower chamber, paired with a concentric mounting pad machined into the grinder body to stabilise the shaft under load.
• This architecture ensures perfect concentricity and stability of the burr assembly even at high torque levels, maintaining parallelism throughout the grind cycle.
• Each bearing is seated in a rigid CNC-machined carrier to prevent drift or deformation over time. The result is a drive system that eliminates axial movement and vibration — preserving alignment, reducing wear, and guaranteeing long-term mechanical integrity.
• When combined with the brushless motor and planetary gearbox, this alignment system delivers smooth rotational balance and consistent grind performance, dose after dose.
FINE CALIBRATION & ALIGNMENT
• Beyond its stepless collar, the VS4 includes a micro-calibration system built into the outer burr carrier.
• A five-hole pattern allows users to mechanically shift the burr’s zero point by ±20 microns for ultra-precise alignment. This ensures perfect parallelism between burrs and allows the grinder to be tuned with laboratory-level precision — compensating for burr wear or alignment variance over time.
PARTICLE DISTRIBUTION
53MM STAINLESS STEEL SUPERNOVA BURR
BURR PARTICLE SIZE LASER ANALYSIS
Please note: Due to lab conditions, the data from the QICPIC laser analyzer are for your reference only. Results from hand sifting may differ.
BUILD & MATERIALS
• The VS4 is built from aerospace-grade aluminium alloy, CNC-machined to within 10–20 microns of tolerance. All internal surfaces — including the single-body chamber, grounds spindle, and carrier assembly — are fully anodised for ultra-low adhesion and wear resistance. This finish minimizes static buildup, enhances mechanical smoothness, and prevents material transfer over time.
• The structural design absorbs vibration, preserves alignment, and communicates precision through feel — every dial turn, every grind cycle, every detail refined to mechanical perfection.
CHOOSE YOUR COLOR
Available in 5 colors to suit your style.
ELECTRICAL & SAFETY SYSTEMS
• The VS4 is powered by direct AC input (100–240 V) with onboard conversion to a regulated 24 V DC motor system. This integrated electrical architecture removes the need for bulky external adapters, delivering efficiency and reliability in a single, compact form.
• A built-in auto-off feature shuts down the grinder automatically once an empty chamber is detected, improving energy efficiency and extending component lifespan.
• Comprehensive thermal protection safeguards the motor and gearbox from overheating, while an interlock safety circuit instantly cuts power when the chamber is detached — ensuring safe, user-friendly maintenance.