Rocket R9 2 Group Espresso Machine
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Rocket R9 2 Group Multi-Boiler Commercial Espresso Machine
The Rocket R9 2 Group is a commercial multi-boiler espresso machine for specialty cafés that need independent temperature control at each group. Two 1.9-liter PID-controlled coffee boilers supply fully saturated groups, while a separate 9-liter steam boiler uses pressure-transducer control for rapid recovery through milk-heavy service.
Automatic volumetric dosing, a digital shot timer at each group and temperature adjustment in fine increments give baristas the feedback needed to maintain recipes through a busy day. The lowered chassis improves interaction across the bar, while cool-touch steam wands and lever valves support fast milk workflow.
Why Choose the Rocket R9?
Independent coffee boiler for each group
Each group has its own 1.9-liter brew boiler and PID setting. A shop can run two coffees at different temperatures or keep both groups matched with less cross-group thermal interaction.
Fully saturated group architecture
The groups are integrated with their brew boilers to improve thermal stability across repeated shots. This matters during rush periods when groups cycle continuously.
9-liter steam boiler with pressure transducer
The separate service boiler maintains steam and hot-water capacity. Transducer control provides precise pressure feedback and responsive recovery compared with a basic mechanical pressurestat.
Volumetrics and group-level timers
Programmed portions let baristas move to milk and assembly, while the timers show extraction duration at each station. Recipes should still be verified by weight and taste as coffee and grind conditions change.
Low-profile commercial workflow
The 497mm-high body keeps sightlines more open between barista and guest. Lever-operated cool-touch steam wands are positioned for repeated service.
Rocket R9 2 Group Specifications
| Machine type | Commercial 2-group multi-boiler espresso machine |
|---|---|
| Groups | 2 fully saturated groups |
| Coffee boilers | 2 × 1.9 L, independently PID controlled |
| Steam/main boiler | 9 L |
| Portion control | Automatic volumetric |
| Steam control | Pressure transducer |
| Shot timer | Standard at each group |
| Cup clearance | 86mm |
| Steam | Cool-touch stainless wands with lever valves |
| Power | 5.9 kW |
| Dimensions | 760 mm W × 590 mm D × 497 mm H (29.9 × 23.2 × 19.6 in) |
| Body | AISI 304 stainless steel; black or white side panels by request |
| Water | Commercial direct-water connection and drain required |
Workflow and Buyer Fit
The R9 is a strong fit for cafés serving multiple espresso offerings, dialing roast-specific temperatures or demanding stable performance across two active groups. Independent boilers add control, but they also make installation, training and preventive maintenance more important. Establish written recipes for dose, yield, time and temperature and verify each group during opening calibration.
Choose the Doppia if a shared coffee boiler and dual-boiler separation meet your needs at a lower investment. Choose the Boxer when a compact HX platform and straightforward volumetrics matter more than independent group temperatures. The R9V is the pressure-profiling step above the R9 when saved pressure curves are central to the menu.
R9 vs. Doppia vs. Boxer 2 Group
| Model | Brew system | Best fit |
|---|---|---|
| Boxer 2 Group | 13.2 L HX boiler | Compact, efficient commercial service |
| Doppia 2 Group | 4 L shared coffee + 9 L steam | Dual-boiler value and saturated groups |
| R9 2 Group | 2 × 1.9 L coffee + 9 L steam | Independent group temperatures |
Electrical, Water and Counter Planning
The 2-group R9 is rated at 5.9kW and requires a dedicated commercial connection. Confirm North American voltage, phase, amperage and connection type before purchase. Provide treated water at the correct pressure, an accessible shutoff, drainage and clearance for panel removal. Verify that the counter can support the operating and service loads.
Water Quality and Preventive Maintenance
Test hardness, alkalinity, chloride and total dissolved solids before choosing treatment. Poor water can cause scale, corrosion and flavor problems that are not solved by filtration alone. Backflush each group, clean screens and baskets, purge steam wands, verify volumetric recipes and schedule preventive service based on actual volume.
Build a Rocket Commercial Bar
Compare Rocket commercial espresso machines and the complete Rocket collection. Match the R9 with commercial grinders capable of serving each espresso recipe and peak-hour demand.
Frequently Asked Questions
Is the Rocket R9 a multi-boiler machine?
Yes. The 2-group version has two 1.9-liter coffee boilers and one 9-liter steam boiler.
Can each group use a different temperature?
Yes. Each brew boiler has independent PID control.
Does it pressure profile?
The standard R9 focuses on independent temperature and volumetric control. Choose the R9V if programmable pressure profiling is required.
Are the groups saturated?
Yes. Rocket specifies fully saturated groups.
Does it have volumetric dosing?
Yes. Automatic portion control is standard.
Are shot timers included?
Yes. Each group has shot-time feedback.
How large is the steam boiler?
The 2-group model uses a 9-liter main boiler.
What cup clearance is provided?
Rocket lists 86mm of cup clearance for this R9 configuration.
What electrical service is required?
The machine is rated at 5.9kW. Confirm the exact voltage, phase, amperage and connection with Espresso Outlet.
Does it use a reservoir?
No. It requires commercial direct water and drainage.
What warranty is included?
A one-year Espresso Outlet warranty applies; confirm labor, travel and installation terms.
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