Mazzer Robur S Automatic Coffee Grinder - 71mm Burrs

High-Power Grinding Built for Intensive Daily Service

Designed for high-pressure environments, the Mazzer Robur S Grinder is a premier choice for baristas managing substantial daily volumes and demanding workloads. This robust machine features a high-performance 800-Watt motor and provides exceptional speed, achieving an average grinding rate of 5g per second at 50Hz. To ensure precision, the grinder utilises a stepless micrometrical adjustment system enhanced with a wider range and the user-friendly "Memory Track" to index settings.

Industrial Performance with Ergonomic, Low-Maintenance Design

Beyond its technical power, the Robur S prioritises ergonomic functionality and ease of maintenance. The grinding chamber is designed for effortless cleaning without losing your specific grind setting, while the doser is engineered to keep grounds fresh. Built with a durable aluminium die-cast body, the unit includes a static aluminium tamper and a stainless steel tray as standard.

• Burrs: Conical burrs available in two configurations:
  • Single-phase: 71mm (ref. 186C).
  • Three-phase: 83mm (ref. 187C).
• Power: 800-Watt motor.
• Grinding Speed:
  • 50Hz: 5g per second at 420 rpm.
  • 60Hz: 6g per second at 500 rpm.
• Hopper Capacity: 1.6 kg (3.5 lbs).
• Doser Capacity: 280g (0.6 lbs) of ground coffee.
• Dose Adjustment: Standard range of 5.5–8g per dose.
• Body Material: Die-cast aluminium.
• Height (H): 720 mm.
• Depth (D): 464 mm.
• Width (A/B): Base width of 234 mm; total width of 252 mm.
• Net Weight: 28 kg (62 lbs).

Mazzer Robur Electronic vs Automatic: Which Heavyweight is Right for Your Café?

If you have spent any time behind a high-volume espresso bar in London or Manchester, you’ll know the name Mazzer. Specifically, the Robur—a beast of a grinder equipped with 71mm conical burrs designed to chew through kilos of coffee without breaking a sweat.

(Image: Host Milan 2025 - Prime Coffee Suppliers CE)

But when you’re looking to upgrade your kit, you’ll spot two distinct versions: the Electronic (On-Demand) and the Automatic (Doser). While they look similar from a distance, the impact on your workflow and coffee quality is significant.

The Mazzer Robur Automatic: The Traditional Workhorse

The "Automatic" model is the classic doser version. It grinds coffee into a front-mounted chamber, which the barista then dispenses by pulling a manual lever.

• How it works: Sensors in the chamber detect when the ground coffee level is low. The "Automatic" function kicks in, grinding more beans to keep the chamber full, then stops once it's topped up (usually every 12 doses).

• The Pros: It is lightning fast during a frantic morning rush. Since the coffee is already ground, a barista can flick the lever and have a portafilter filled in under a second.

• The Cons: Retention and freshness. If the grounds sit in the doser during a quiet spell, they lose those delicate aromatics. It also leads to more "sweepings" and wasted coffee at the end of the shift.

The Mazzer Robur Electronic: The Modern Precision Tool

The "Electronic" (specifically the latest Robur S model) is an "on-demand" grinder. There is no chamber; the coffee is ground directly into your portafilter.

(Image: Host Milan 2025 - Prime Coffee Suppliers CE)

• How it works: You program specific timings (e.g., 3.2 seconds for a double shot) via a digital display. When you trigger the grinder with your portafilter, it grinds exactly what you need.

• The Pros: Unbeatable freshness. Every shot is ground to order, and with the new Grind Flow Control (GFC) system, static and clumping are virtually eliminated. The digital dose counter is also a dream for managers tracking yield.

• The Cons: It takes a few seconds longer per drink compared to a pre-filled doser—a small price to pay for superior flavour.

	Robur Automatic	Robur Electronic (S)
Delivery	Pull-lever (Doser)	Digital (On-Demand)
Dosing Control	Manual/Volumetric	Digital Timer (to 0.01s)
Waste Level	Higher (Chamber leftovers)	Minimal (Grind-on-demand)
Best For	High-turnover "Italian" bars	Quality-focused specialty cafes
UK Voltage	230V Standard	230V Standard

 

Product FAQ: Your Questions Answered

Is the Mazzer Robur Electronic suitable for single-dosing? While the Robur Electronic has low retention (the Robur S reduces it by a further 52%), it is designed as a high-volume hopper grinder. For dedicated single-dosing in a low-volume environment, you might consider the Mazzer ZM.

How often do I need to change the 71mm conical burrs? For most busy UK cafes, we recommend changing the burrs every 800kg to 1000kg of coffee to maintain grind uniformity and prevent heat buildup.

Can I adjust the dose on the Automatic version? Yes. You can adjust the dose by turning the nut inside the doser chamber to increase or decrease the volume of the "pie segments." However, it is less precise than the Electronic version's 0.01s timer.

Does it come with a UK plug? Yes, all Mazzer units supplied by authorised UK distributors come with a standard 13-amp UK 3-pin plug and are rated for 230V.

About the Brand - Mazzer

Mazzer specializes in making high-quality coffee grinders. Their mission is to produce reliable and innovative equipment for the professional coffee sector. Their products are made in Italy with respect for the environment and community. They design and produce all components for durability and use the latest technology. 12% of their annual turnover is invested in R&D.