Bottomless Portafilter for Breville
Breville and Sage sell the same machines under two names, and between them they use two different portafilter fittings. Getting the right one is the whole job.
Which Breville do you have?
Breville numbers its espresso machines with a BES prefix, and the number is printed on a label underneath or on the back of the machine. Sage machines carry the same model numbers under a different brand name, so a Sage Barista Express and a Breville Barista Express take the same portafilter. Find your number in the table and the fit is decided.
| Model | Sold as | Portafilter fit |
|---|---|---|
| BES870 | Barista Express | 54 mm, 3 lugs |
| BES875 / BES876 / BES878 | Barista Express Impress, Barista Pro | 54 mm, 3 lugs |
| BES880 / BES881 | Barista Touch, Barista Touch Impress | 54 mm, 3 lugs |
| BES840 | Infuser | 54 mm, 3 lugs |
| BES450 / BES500 | Bambino, Bambino Plus | 54 mm, 3 lugs |
| BES810 / BES820 | Duo-Temp, Duo-Temp Pro | 54 mm, 3 lugs |
| Barista Max | Barista Max | 58 mm |
| Barista Mini / Signature | Barista Mini, Signature | 58 mm |
Solis 1170 also takes the 54 mm fit. If your model is not listed, send us the number before ordering rather than measuring the basket.
Why the Barista Express is the machine people put one on first
The Barista Express is the most common machine in our review corpus by a distance, and there is a reason it and the bottomless portafilter go together. It has a built-in grinder, which means the grind setting is right there on the front of the machine, and it dispenses straight into the portafilter. That combination makes it very easy to adjust grind — and very hard to know whether the adjustment helped, because the spout hides the result.
Put a bottomless portafilter on the same machine and the loop closes. You change the grind by one step, pull a shot, and watch what the puck does. Too coarse and the first drop arrives almost immediately and the stream is pale and fast. Too fine and the machine labors, the flow arrives late, and the stream comes in fits. Somewhere between the two the shot gathers into one steady centered rope, and that is the setting you keep.
The second thing Barista Express owners find is that the machine's own dosing is generous. The grinder delivers into a basket that is often fuller than it needs to be, and an overfilled basket sits too close to the shower screen. That shows up as a wet, cratered puck and, on a bottomless portafilter, as spray around the outside edge. Reducing the dose slightly usually settles it.
The single-wall basket question
Breville machines ship with two kinds of basket, and this catches people out. The one fitted at the factory is usually pressurized, sometimes called dual-wall: it has a normal mesh on top and a second floor underneath with one small hole. That design creates artificial back-pressure so that supermarket pre-ground coffee still produces crema.
A pressurized basket cannot work on a bottomless portafilter. All the flow is forced through that single hole, so instead of seeing the puck you see one jet coming out of a valve. Nothing about the extraction is visible, because the basket is deliberately hiding it.
Every Puckwell portafilter ships with a non-pressurized basket — a single wall with a full field of fine holes. That is the basket you want. Expect to grind finer than you did before: a pressurized basket compensates for a coarse grind and a single-wall one does not. Most Barista Express owners end up several steps finer on the dial than they were.
Fitting it, and what a good fit feels like
The portafilter should slide into the group head with light resistance and lock with the handle ending up somewhere near the center. A brand new gasket sits stiff, so on a machine that has been in use for a while the handle often travels further to the right than it did when the machine was new. That is the gasket, not the portafilter.
What you should not feel is slop. If it rattles in the group, or if it locks with almost no resistance, the fit is wrong and you will get leaks around the rim that look exactly like a puck problem. Of the 389 written reviews across our range, 130 mention how the portafilter fitted their machine — more than mention the wood, the basket, the price and the delivery combined. It is the thing people check first, so it is the thing the fit table is built around.
Dialling the grinder on a Barista Express
The Barista Express has two grind controls and people usually only know about one. The dial on the side sets the burr gap and moves in steps you can feel; that is the one everybody uses. Inside the hopper there is a second adjustment, an inner burr setting, which most owners never touch and which shifts the whole usable range.
Start with the outer dial. Move one step at a time and pull a shot after each change, watching the base rather than the cup. Too coarse shows as an early first drop and a pale, fast stream. Too fine shows as a late first drop, an audible strain, and a stream that arrives in bursts. If you run out of adjustment before the shot looks right — the dial is at its finest and the coffee still runs fast — that is the moment the inner burr setting is worth investigating, not before.
Change one thing at a time. Adjusting grind and dose together is how people spend a week without learning anything, because every shot has two variables in it and the base cannot tell you which one moved.
Dose weights for the 54 mm basket
Weigh the coffee once. The Barista Express grinder doses by time rather than by weight, and the amount it delivers drifts as the beans age and the hopper empties, so the same setting does not give the same dose in week three that it gave in week one.
Put a cup on a scale, grind into the basket, and note what you get. Pull a shot and read the base. Water escaping around the rim with a clean shower-screen imprint on the puck means the dose is too high for the basket. A puck that falls apart wet, with a fast pale shot, means it is too low. Half a gram at a time is enough to move it.
Handle woods for the Breville fits
The 54 mm fit is offered in rosewood, beech and Chacate Preto. The 58 mm comes from a different mold, with a facetted collar and a more conical handle, and is offered in rosewood and beech. The timber is the same on both fits; it is the shape of the handle that changes.
Related reading
If you are not sure which family your machine belongs to, the portafilter size guide walks through it by model number. If your first shots spray, why a bottomless portafilter sprays covers the three causes in order of likelihood. And the main product page has the full fit table and the specifications.
Breville portafilter questions
What size portafilter does a Breville Barista Express take?
The Barista Express, BES870, takes a 54 mm three-lug portafilter. So do the Barista Pro, Barista Touch, Infuser, Bambino and Duo-Temp. The larger Barista Max, Mini and Signature machines take 58 mm instead.
Will a Sage portafilter fit a Breville machine?
Yes, within the same model. Sage and Breville are the same machines sold under different brand names in different countries, and the model numbers match. A 54 mm fit for a Sage Barista Express is the same part as one for a Breville Barista Express.
Do I need a different basket for a bottomless portafilter?
You need a non-pressurized, single-wall basket, and one ships with every portafilter here. The dual-wall basket that came with your machine forces all the flow through a single hole, so there would be nothing to watch. Expect to grind finer after switching.
Why does my Breville portafilter leak around the edge?
Usually the dose is too high, so the puck is pressed against the shower screen and water escapes around the rim rather than through the bed. Reduce the dose slightly. If it leaks with a normal dose, check the group gasket, which hardens with age and stops sealing.