Which to buy · Every setting
Eureka Mignon Silenzio vs Rancilio Rocky
Two grinders cross-shopped at the same money. The Mignon Silenzio turns 0–24 rotations; the Rocky is numbered 0–55.
Which to buy
Choose the
Mignon Silenzio if you…
- want stepless micrometric adjustment
- want timed dosing, started by the portafilter on a microswitch
- want to buy new
Choose the
Rocky if you…
- are buying used — Rancilio no longer sells it new
- want stepped settings you can return to — up to 50 on the front ring
- dose by hand — it has no programmable doses
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Eureka now lists the Silenzio as the Mignon Silenzio 55, with 55 mm burrs. Rancilio no longer lists the Rocky (its page now returns 404) and sells the Stile as its home grinder, so you'd be buying the Rocky used.
Sources: Eureka — Mignon Silenzio 55 · Rancilio Group — Rocky (archived Jan 2022) · Rancilio Group — Rocky SD specifications (archived May 2022) · Rancilio Group — Stile
| Mignon Silenzio | Rocky | |
|---|---|---|
| Brand | Eureka | Rancilio |
| Scale | Rotations | Numbered dial |
| Dial range | 0.0 rotations – 24.0 rotations | 0 – 55 |
| Burrs | Flat | Flat |
| Espresso → filter | 6.5 rotations | 20 numbers |
| Filter → coarse | 7 rotations | 23 numbers |
Converting a setting
If a recipe quotes a setting for one of these grinders, read across for the equivalent on the other. Rows are spaced evenly by grind size, not by dial number — on a conical burr those are not the same thing.
| Mignon Silenzio | Rocky |
|---|---|
| 1.5 | 5 |
| 3 | 9 |
| 4 | 14 |
| 5.5 | 18 |
| 1+1 | 22 |
| 1+2 | 26 |
| 1+3 | 29 |
| 1+4 | 32 |
| 1+5 | 36 |
| 2+0 | 39 |
| 2+1 | 42 |
| 2+2 | 45 |
| 2+3 | 48 |
| Rocky | Mignon Silenzio |
|---|---|
| 5 | 1.5 |
| 9 | 3 |
| 14 | 4 |
| 18 | 5.5 |
| 22 | 1+1 |
| 26 | 1+2 |
| 29 | 1+3 |
| 32 | 1+4 |
| 36 | 1+5 |
| 39 | 2+0 |
| 42 | 2+1 |
| 45 | 2+2 |
| 48 | 2+3 |
Side by side, by brew method
Where each grinder lands for the same brew, worked out from its own dial curve.
| Method | Mignon Silenzio | Rocky |
|---|---|---|
| Espresso | 2.5 | 8 |
| Moka pot | 4 | 13 |
| AeroPress (short steep) | 5.5 | 18 |
| Pour over — V60 / cone | 1+1.5 | 24 |
| Siphon | 1+2 | 26 |
| Pour over — flat bottom | 1+2.5 | 27 |
| Steep and release — Clever / Switch | 1+3 | 28 |
| Drip / batch brew | 1+3 | 29 |
| Cupping | 1+3.5 | 30 |
| Chemex | 1+4 | 32 |
| French press | 1+5.5 | 38 |
| Cold brew | 2+1.5 | 44 |
The shape of each dial
Where the connectors bunch, that grinder’s dial is compressed and single steps count for more. Comparing the two shapes tells you which gives finer control, and where.
Eureka Mignon Silenzio
Rancilio Rocky
Dialing in the Mignon Silenzio
The Silenzio is the quieter Mignon, sharing the micrometric stepless adjustment that makes small movements meaningful at the fine end. Built for espresso; filter is possible at the far edge of the dial.
Dialing in the Rocky
A stepped espresso grinder that has been the budget recommendation for a very long time. The 55 steps across 50mm flat burrs are its limitation — for espresso you will sometimes want a setting between two of them and there is not one, and a single step can move a shot by seconds. Twenty of those steps cover espresso through filter, which is more resolution than the fine end usually gets at this price. Two things make it an espresso grinder in practice rather than a general one: changing setting means holding the locking lever while twisting the hopper, and it keeps a couple of grams in the chute, so every switch between espresso and pour over costs you both fiddling and coffee. Most owners pick one end and stay there.