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Rocket R Cinquantotto (R58)

Dual boiler technology, PID control & rotary pump – the premium model from Rocket Espresso

The Rocket R Cinquantotto (Italian for "58") is the successor to the popular R58 – redesigned, refined, and technically up-to-date. With two independently controlled copper boilers , a quiet rotary pump , and an external touchscreen control module, the Cinquantotto sets new standards for discerning home baristas.

Professional-class technology – for the home kitchen

  • E61 brewing group with 4.05 kg made of solid brass for perfect temperature stability
  • Dual boiler system with separate boilers for espresso (0.58 l) & steam (1.8 l), both controlled by PID
  • External PID control via touch display: Brewing temperature, eco mode, shot timer & calendar function controllable
  • Rotary pump : extremely smooth running, professional brewing pressure of 9 bar
  • Switchable between water tank (2.6 l) and fixed water connection

Intelligent operation – with maximum flexibility

  • Touchscreen control with removable module – for modern handling or puristic appearance
  • Shot timer integrated directly into the display – for precise control of the extraction
  • Eco mode & automatic on/off function programmable according to calendar
  • Manual lever operation for an authentic barista feeling

Design & workmanship

  • Matt black case made of polished stainless steel (18/10 chrome nickel steel)
  • Steam lance & hot water tap with cool-touch technology
  • Heated cup rest by boiler heat
  • Generous drip tray and height-adjustable cup stand

Technical data at a glance

  • Dimensions (WxHxD): 31 × 38.5 × 44 cm
  • Weight: 29 kg
  • Power: 2 × 1,400 W, max. power consumption 1,550 W
  • Pump: Rotary pump, externally adjustable pressure
  • Tank volume: 2.6 l, optional fixed water connection (3/8")
  • Brewing group: Faema E61
  • Dual boiler: Espresso 0.58 l | Steam 1.8 l – both copper-coated & insulated

Scope of delivery

  • 1 portafilter 1-cup & 1 portafilter 2-cup
  • Blind sieve, aluminum tamper, cleaning brush
  • Water inlet and drain hose (for permanent water connection)
  • Touchscreen module & USB stick
  • Microfiber cloth & cleaning powder

Conclusion

The Rocket R Cinquantotto is the perfect choice for anyone who wants to enjoy uncompromising espresso quality and professional features in their own home. With its modern electronics, external control, and uncompromising build quality, it is one of the best dual boilers on the market.

Angaben zum Hersteller

Rocket Milano S.r.l., Via E. Curiel 13, 20060 Liscate, Milan, Italien, www.rocket-espresso.com, info@rocket-espresso.com

Frequently Asked Questions

I bought a new coffee grinder from Naturbohne and there are coffee residues in it.

Please note: Some manufacturers test their coffee grinders before shipping, which means that small coffee residues or bean residues can occasionally be found in the grinder. This procedure is used to test functionality and is considered a quality feature. Of course, we only sell new products - unless expressly stated otherwise.

Static charge – coffee grounds spray out from the side

With some coffee grinders, the ground coffee can become statically charged and spray out of the portafilter at the side. This means that not all of the ground coffee gets into the portafilter, which can lead to uneven extraction. Our recommendation: Use a dosing funnel to ensure that all of the ground coffee is precisely fed into the portafilter - for optimal espresso enjoyment.

What is dead space in coffee grinders?

Conventional coffee grinders often leave a so-called dead space in which coffee residues accumulate. These residues can not only affect the freshness, but also lead to old and fresh coffee grounds being mixed, which negatively affects the taste. In contrast, single dose grinders have a well-thought-out design that eliminates the dead space. Each portion is ground individually and precisely so that no residues are left behind - for a consistently pure and full-bodied coffee experience.

Which portafilter fits my espresso machine?

When choosing the right portafilter for your portafilter machine, it is important to know that each manufacturer develops its own brewing group - the most well-known is the Faema E61. However, this does not mean that any portafilter will fit without any problems. An incompatible portafilter can leak, which will have a direct negative impact on the quality of your espresso. We therefore recommend using either the portafilter originally supplied or one that is explicitly stated to be compatible with your machine. This will ensure that the pressure is optimally built up and the espresso is perfectly extracted.

Can I visit you or pick up the goods personally?

Yes, of course, you are welcome to come by and look at our products by appointment. We would be happy to advise you personally. The best thing to do is to send us an email with a few suggested appointment times.

We are located 5 minutes from the motorway between Stuttgart and Lake Constance on the edge of the Black Forest.

Important note, first use coffee grinders

Another little tip for the perfect start with your new mill:

You will get the best grinding result after you have ground about 1-2 kg of beans. It is best to use a few cheap beans so that the grinder can work optimally. And if you are wondering what you can do with the bean flour - it is perfect plant fertilizer! 🌿

It contains nitrogen, potassium, sulfur and phosphorus and is a real nutrient bomb for your plants.

Könnt ihr bei meiner Siebträgermaschine eine Offset Kalibrierung durchführen ?

Es gibt einige Argumente, die gegen eine Offset-Kalibrierung bei Lelit-Siebträgermaschinen sprechen, insbesondere bei Modellen wie der Lelit Bianca. Diese beziehen sich vor allem auf die Komplexität und die Limitierungen des Offsets als alleinige Lösung für Temperaturprobleme:

  1. Temperaturschwankungen und Instabilität. Der Offset berücksichtigt eine konstante Differenz zwischen Kesseltemperatur und Brühtemperatur. In der Praxis können jedoch Temperaturschwankungen auftreten, z. B. durch längere Standzeiten oder kontinuierliches Brühen. Dadurch ist die tatsächliche Brühtemperatur nicht immer präzise vorhersehbar.
  2. Abhängigkeit von Umgebungsbedingungen. Faktoren wie Raumtemperatur, Luftfeuchtigkeit und der Zustand der Maschine (z. B. Aufheizzeit) beeinflussen die Brühtemperatur erheblich. Ein fester Offset kann diese Variablen nicht dynamisch ausgleichen, was zu ungenauen Ergebnissen führen kann.
  3. Wärmeverlust bei Standzeiten. Nach längeren Pausen kühlt die Brühgruppe ab, und die Maschine benötigt Zeit, um wieder auf die gewünschte Temperatur zu kommen. Ein korrekt eingestellter Offset kann dies nicht kompensieren, weshalb zusätzliche Maßnahmen wie ein “Cooling Flush” nötig sind.
  4. Fehlkalibrierungen ab Werk. Bei einigen Lelit-Modellen wurde festgestellt, dass der Offset ab Werk oft ungenau eingestellt ist (z. B. 4–8 Grad zu niedrig bei der Lelit Bianca). Dies erfordert eine manuelle Nachkalibrierung durch Fachpersonal, was für Endnutzer kompliziert sein kann.
  5. Missverständnisse in der Anwendung. Viele Nutzer sind durch widersprüchliche Informationen zur Offset-Einstellung verunsichert, was zu Fehlanpassungen führen kann. Beispielsweise wird oft erwartet, dass der Offset allein alle Temperaturprobleme löst, obwohl er nur ein Teil eines komplexeren Systems ist.

Fazit
Die Offset-Kalibrierung ist ein nützliches Werkzeug, aber sie sollte nicht isoliert betrachtet werden. Eine Kombination aus präziser PID-Steuerung, regelmäßiger Wartung und angepassten Techniken (z. B. Spülshots) ist notwendig, um optimale Brühergebnisse zu erzielen.

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