Breville Smart Grinder Pro: Is It Good for Espresso?

The table below is the Smart Grinder Pro (model BCG820) as Breville lists it. Note the blank row: Breville gives no burr diameter, so any figure you see elsewhere is not from the maker.

A few figures help with planning. At 15.3 inches tall it is taller than most of the machines it pairs with (the Bambino Plus is 12.2 inches by Breville's listing), so check the gap under a wall cabinet with the hopper in place. At 8.5 inches wide it sits comfortably beside a 7.7 inch Bambino, and the 165 W motor runs from an ordinary kitchen outlet.

Grind size is the main control you have over an espresso shot. Breville's Barista Express manual says a grind that is too fine 'looks like powder and feels like flour', stops water flowing and gives an over-extracted, bitter shot, while too coarse a grind runs fast and under-extracts. Baratza's dialling-in guide gives a starting recipe of 18 g in, 36 g out in 25 to 32 seconds, and says to grind finer if the shot is sour and quick, coarser if bitter and slow.

On a stepped grinder like the Smart Grinder Pro, each click moves the burrs a fixed amount. Sixty clicks cover everything from espresso to French press, so only the fine end of the dial is used for espresso. That is the trade-off with any wide-range stepped grinder: the steps are shared between brew methods. Baratza's Encore ESP takes a different approach and gives 20 of its 40 settings over to espresso as finer 'micro-steps'. A stepless grinder, such as the Fellow Opus 2 or MiiCoffee DF54, lets you stop anywhere between marks.

In practice, a stepped dial matters most with single wall baskets, which Breville says let you 'experiment with grind, dose and tamp'. With dual wall (pressurised) baskets, which Breville says 'regulate the pressure' regardless of grind, the exact step matters much less.

The Smart Grinder Pro comes with two cradles, one for 50 to 54 mm portafilters and one for 58 mm. Dosing iQ then grinds for a set time, adjustable in 0.2 second steps, so you can tune the dose to your basket. The table matches those cradles against the portafilter sizes makers publish for machines in our catalogue.

Dosing iQ measures time, not weight, so the same setting gives slightly different doses as beans, grind size and hopper level change. Breville's Bambino manual gives 16 to 19 g for its two cup basket, which is a useful target: weigh a few timed doses on a kitchen scale, adjust the time in 0.2 second steps until you land inside your basket's range, and re-check when you open a new bag.

None of these points makes the Smart Grinder Pro a poor espresso grinder. They are the questions forum threads raise that the maker's page does not answer, so you can decide whether they matter to you.

Every grinder in this table is rated for espresso by its own maker, except where the table says otherwise. Prices are bands, because grinder prices move often; the cards and the grinder tool show live prices. The grinder tool on this page also filters grinders by the machine you own and your budget.

Three columns do most of the work. Stepless means the adjustment has no clicks, so you can stop between marks; it suits people who change beans often and want very fine control at the espresso end. Single-dose means the grinder is designed to grind one weighed dose at a time and keep little coffee inside, which suits people who keep beans in airtight storage rather than in a hopper. Portafilter dosing tells you whether the grinder holds your portafilter or a dosing cup, which saves a transfer step.

The Smart Grinder Pro scores on the third column and on hopper size, and gives ground on the first two. For an owner of a 54 mm Breville machine who keeps beans in the hopper, that can be the right trade: a large hopper, a cradle that holds the portafilter, and a timer that repeats the dose. For someone who weighs every dose and swaps beans weekly, the DF54 or Encore ESP Pro is built for that habit instead.

A comparison that comes up often in forum threads is the Smart Grinder Pro plus a Bambino or Bambino Plus against a Barista Express, whose grinder is built in. Breville lists the Express's grinder as steel conical burrs with 16 settings; the Smart Grinder Pro has 60. Both are stepped, and Breville publishes no burr size for either.

The difference in practice is range and freedom. Sixty settings cover filter coffee as well as espresso, so the Smart Grinder Pro can serve a pour-over or French press too. And because it is a separate box, it stays useful if you later replace the machine. Our Bambino Plus vs Barista Express page prices both routes as complete setups.

Buy the Smart Grinder Pro if you own, or are buying, a Breville or another machine with a 51, 54 or 58 mm portafilter; if you like grinding straight into the portafilter on a timer; and if you want one grinder for espresso and filter coffee. It is the natural partner for a Bambino or Bambino Plus.

Look elsewhere if you want stepless adjustment at the same price (Fellow Opus 2), want to weigh single doses and switch beans often (DF54, Encore ESP Pro, HiBREW G5), or want most of the dial reserved for espresso (Encore ESP). If the budget is under $100, the SHARDOR has a cradle and 51 settings on its maker's listing. For the full field, see the espresso grinder hub and the grinder guide for the Breville Bambino.

Whichever grinder you choose, the machine's baskets set the ceiling. With dual wall baskets, which Breville says regulate the pressure regardless of grind, a grinder's fine steps matter much less. With single wall baskets, the grind is the main dial, and a grinder rated by its maker for espresso is the one purchase that changes the shot most.