About the Brand
Mazzer has been engineering coffee grinders in Venice, Italy since 1948, when Luigi Mazzer opened the workshop that grew into one of the most respected names in professional grinding. Now run by the third generation of the same family, Mazzer is the only major manufacturer that designs, machines and assembles its own burrs in-house, holding tolerances as tight as 0.02mm. Its grinders work behind the bar in more than 100 countries, chosen by specialty cafés and high-volume coffee shops that can't afford an inconsistent shot.
The Product
The Mazzer Kold S Electronic Grinder is, alongside the Robur S, the fastest grinder in Mazzer's line-up — grinding roughly 5g a second at 50Hz without letting that speed cook your coffee. A belt-driven transmission, low RPM and a double cooling system work together to keep the beans cool even through extended grinding. This is a grinder built for cafés where speed and flavour both have to hold up under pressure.
Key Features
Belt-Driven, Low-RPM Transmission (Heat Protection)
Instead of gearing the motor directly to the burrs, the Kold S runs a belt-driven transmission at low RPM, cutting the heat transfer that fast, direct-drive grinding usually produces.
Double Cooling System (Consistent Temperature)
A split chassis works alongside the belt-driven design to dissipate heat, protecting the aromatic compounds in your coffee even during back-to-back service.
71mm Conical Steel Burrs (High-Volume Consistency)
Homogeneous grinding and excellent dose repeatability with reduced retention, built for cafés that need the same result on the hundredth shot as the first.
Stepless Adjustment with Memory Track (Fast Recalibration)
Micrometric grind adjustment paired with an indexed Memory Track system lets baristas switch between blends and return to a previous setting without guesswork.
On-Demand Portafilter Activation (Hands-Free Dosing)
An adjustable portafilter holder triggers grinding automatically and keeps the flow of grounds centred in the basket, freeing up the barista's hands during service.
Interchangeable Wire Dampers (Grind Flow Control)
A removable aluminium outlet insert takes three interchangeable dampers — AntiClumping, AntiDust and Hybrid — so you can match the damper to the origin, roast profile or weather on the day.
IoT Connectivity (Remote Monitoring)
Built-in IoT functionality keeps you connected to the grinder's performance beyond the bar, useful for multi-machine or multi-site operations.
Who It's Built For
The Kold S is built for high-volume coffee shops where the queue doesn't stop, but the shot quality can't drop either. You get café-fast grinding without the heat penalty that speed usually carries, plus the flexibility to fine-tune dampers for whatever beans you're running that week. Fast enough for the rush, precise enough for the shot that follows it — no trade-off required.
Specifications
| Burr Type |
Conical steel burrs |
| Burr Size |
71mm (2¾") |
| Grind Adjustment |
Stepless micrometric |
| Dosing Method |
On-demand (portafilter-activated) |
| Hopper Capacity |
1.5kg |
| Motor Power |
800W |
| RPM / Grinding Speed |
420 RPM / ~5g per sec (50Hz) — 500 RPM / ~6g per sec (60Hz) |
| Dimensions (W×D×H) |
24 × 48 × 70cm |
| Weight |
30kg |
| Power Supply |
220–240V, 50Hz |
| Colour Options |
Silver |
| Use Case |
Commercial, High-Volume Espresso |
| Warranty |
1 year |
Summary
The Mazzer Kold S Electronic Grinder pairs the speed a busy café needs with the cooling engineering to protect flavour at that speed. If your bar can't afford to choose between throughput and quality, this is the grinder built to give you both.