Rocket Home Grinders

A Rocket grinder is built to stand next to a Rocket machine and get used every morning, not admired from across the kitchen. The whole range is aimed at home espresso: flat burrs, fine adjustment, and a dose that drops straight into your portafilter. What separates Rocket grinders from each other is burr size and how the dose gets measured. Those two choices shape every shot you pull.

Which Rocket Grinder Should Sit Next to Your Machine?

Start with burr diameter, because it changes more than anything else on the spec sheet. The Faustino 3.1's 50mm flat burrs cut a clean espresso grind in a small footprint. The Giannino's 55mm burrs use a patented geometry that holds the discs more truly parallel, which narrows the particle spread and makes dialing in less fiddly. The Gravo's 63mm burrs clear the same dose in fewer passes, so they finish faster and run cooler. At home you are not fighting a queue, so bigger burrs buy a more forgiving grind, not speed.

Then decide how the dose gets measured, which is the real fork in this range. The Faustino 3.1 and the Giannino grind on a timer: program up to three doses, tap the pad, and the motor runs. Simple to live with, but seconds are a stand-in for grams, and the same five seconds drifts as a bag ages and the hopper empties. The Gravo removes the stand-in, weighing the coffee as it grinds and stopping on your target.

Adjustment is the part buyers rarely think about and then live with daily. The Faustino 3.1 uses a single-revolution stepless collar and the Giannino a micrometric knob, so you can settle between two positions rather than taking the nearest one. The Gravo adjusts electronically in defined steps and stores the setting in a recipe. Chase one bean and stepless is what you want. Rotate through bags and you want a setting you can return to exactly.

Then the practical fit, which is where these decisions usually go wrong. With the hopper on, these stand 15 to 16 inches tall, so measure the gap under your wall cabinets before anything else. The finishes are drawn to sit with the machines, so one of these beside a Rocket home espresso machine looks deliberate. Start with the full Rocket Espresso range if you are still picking the machine, or see where a Rocket coffee grinder sits against other home coffee grinders.

FAQ

Which Rocket grinder pairs best with a Rocket Appartamento?

Any of them will feed it, and all three are built to grind into the 58mm portafilter the Appartamento uses. The Faustino 3.1 is the usual answer, because its short under-cabinet height and narrow body were drawn around Rocket's home machines and the Appartamento tends to live on a compact counter. Pick the Giannino if quiet matters most, and the Gravo if you would rather the grinder handled the dose.

Is the Faustino 3.1 quiet?

Quieter than the Faustino it replaced. Rocket closed the side cutouts and insulated the case, and that is the change you notice day to day. It is still a flat burr grinder, so it announces itself for the few seconds it runs. If noise is your first concern, the Giannino's anti-vibration cabinet is the quieter of the two.

What changed on the Faustino 3.1 compared with the older Faustino?

The screen, the dosing and the noise. You get a brighter, far more readable display, a third programmable dose, and a button you can press with the portafilter instead of holding down continuous grind. The case is better insulated too. The 50mm flat burrs and the stepless adjustment carry over unchanged, so the grind itself is much the same.

Does the Gravo's grind by weight actually earn its keep at home?

Partly. It stops on weight rather than seconds, so you are not tipping a timed dose onto a scale and correcting it every morning, though you will still want a scale under the cup for output and timing. If you pull the same drink from the same bag every day, a timer is genuinely fine. Weight earns its place when you switch beans often or share the machine.

Can I grind for pour over on a Rocket grinder?

Not well. These burrs are cut for the fine, narrow particle band espresso needs, so the coarse end of the range is vague and hard to land on repeatably. You would also re-dial every time you switched back to espresso, which costs more time than it saves. If you brew both, a separate brew grinder is the honest answer.

Do I have to match the grinder to my Rocket machine?

Nothing technical requires it. Any good espresso grinder will feed a Rocket machine, and any Rocket grinder will feed something else. Matching buys you a counter that looks planned rather than assembled, which is a preference, not a performance claim. Decide on burr size and how the dose gets measured first, then let the finish break a tie.

Can I single dose these, or do I have to fill the hopper?

The Faustino 3.1 and the Giannino are hopper-fed grinders with low retention, so you can drop in a weighed dose and run it through, but that is not what they were built around. The Gravo has a dedicated single-shot mode and a tool for it, which is the cleanest way to work through one bean at a time.

Where do I start with the grind setting?

Nowhere in particular, because the numbers on a stepless collar are a reference scale, not absolute positions. With the grinder running, close the burrs until they just chirp against each other, back off slightly, and treat that as your zero. Dial out from there against shot time. Expect to move it again every time you open a new bag.

How do you clean the burrs?

Brush the chute and wipe the hopper regularly, because coffee oils build up fast where nobody looks. For a full clean the Faustino's burr carrier lifts out on three Allen screws. The Gravo's burrs are screwless, so there are no recessed heads holding old grounds. Neither is a hard job, and once a month suits most home use.

A Rocket grinder is built to stand next to a Rocket machine and get used every morning, not admired from across the kitchen. The whole range is aimed at home espresso: flat burrs, fine adjustment, and a dose that drops straight into your portafilter. What separates Rocket grinders from each other is burr size and how the dose gets measured. Those two choices shape every shot you pull.

Which Rocket Grinder Should Sit Next to Your Machine?

Start with burr diameter, because it changes more than anything else on the spec sheet. The Faustino 3.1's 50mm flat burrs cut a clean espresso grind in a small footprint. The Giannino's 55mm burrs use a patented geometry that holds the discs more truly parallel, which narrows the particle spread and makes dialing in less fiddly. The Gravo's 63mm burrs clear the same dose in fewer passes, so they finish faster and run cooler. At home you are not fighting a queue, so bigger burrs buy a more forgiving grind, not speed.

Then decide how the dose gets measured, which is the real fork in this range. The Faustino 3.1 and the Giannino grind on a timer: program up to three doses, tap the pad, and the motor runs. Simple to live with, but seconds are a stand-in for grams, and the same five seconds drifts as a bag ages and the hopper empties. The Gravo removes the stand-in, weighing the coffee as it grinds and stopping on your target.

Adjustment is the part buyers rarely think about and then live with daily. The Faustino 3.1 uses a single-revolution stepless collar and the Giannino a micrometric knob, so you can settle between two positions rather than taking the nearest one. The Gravo adjusts electronically in defined steps and stores the setting in a recipe. Chase one bean and stepless is what you want. Rotate through bags and you want a setting you can return to exactly.

Then the practical fit, which is where these decisions usually go wrong. With the hopper on, these stand 15 to 16 inches tall, so measure the gap under your wall cabinets before anything else. The finishes are drawn to sit with the machines, so one of these beside a Rocket home espresso machine looks deliberate. Start with the full Rocket Espresso range if you are still picking the machine, or see where a Rocket coffee grinder sits against other home coffee grinders.

FAQ

Which Rocket grinder pairs best with a Rocket Appartamento?

Any of them will feed it, and all three are built to grind into the 58mm portafilter the Appartamento uses. The Faustino 3.1 is the usual answer, because its short under-cabinet height and narrow body were drawn around Rocket's home machines and the Appartamento tends to live on a compact counter. Pick the Giannino if quiet matters most, and the Gravo if you would rather the grinder handled the dose.

Is the Faustino 3.1 quiet?

Quieter than the Faustino it replaced. Rocket closed the side cutouts and insulated the case, and that is the change you notice day to day. It is still a flat burr grinder, so it announces itself for the few seconds it runs. If noise is your first concern, the Giannino's anti-vibration cabinet is the quieter of the two.

What changed on the Faustino 3.1 compared with the older Faustino?

The screen, the dosing and the noise. You get a brighter, far more readable display, a third programmable dose, and a button you can press with the portafilter instead of holding down continuous grind. The case is better insulated too. The 50mm flat burrs and the stepless adjustment carry over unchanged, so the grind itself is much the same.

Does the Gravo's grind by weight actually earn its keep at home?

Partly. It stops on weight rather than seconds, so you are not tipping a timed dose onto a scale and correcting it every morning, though you will still want a scale under the cup for output and timing. If you pull the same drink from the same bag every day, a timer is genuinely fine. Weight earns its place when you switch beans often or share the machine.

Can I grind for pour over on a Rocket grinder?

Not well. These burrs are cut for the fine, narrow particle band espresso needs, so the coarse end of the range is vague and hard to land on repeatably. You would also re-dial every time you switched back to espresso, which costs more time than it saves. If you brew both, a separate brew grinder is the honest answer.

Do I have to match the grinder to my Rocket machine?

Nothing technical requires it. Any good espresso grinder will feed a Rocket machine, and any Rocket grinder will feed something else. Matching buys you a counter that looks planned rather than assembled, which is a preference, not a performance claim. Decide on burr size and how the dose gets measured first, then let the finish break a tie.

Can I single dose these, or do I have to fill the hopper?

The Faustino 3.1 and the Giannino are hopper-fed grinders with low retention, so you can drop in a weighed dose and run it through, but that is not what they were built around. The Gravo has a dedicated single-shot mode and a tool for it, which is the cleanest way to work through one bean at a time.

Where do I start with the grind setting?

Nowhere in particular, because the numbers on a stepless collar are a reference scale, not absolute positions. With the grinder running, close the burrs until they just chirp against each other, back off slightly, and treat that as your zero. Dial out from there against shot time. Expect to move it again every time you open a new bag.

How do you clean the burrs?

Brush the chute and wipe the hopper regularly, because coffee oils build up fast where nobody looks. For a full clean the Faustino's burr carrier lifts out on three Allen screws. The Gravo's burrs are screwless, so there are no recessed heads holding old grounds. Neither is a hard job, and once a month suits most home use.