# Rocket Espresso Appartamento

> Espresso compatibility data from EspressoFit. Confidence: **measured (documented inference or third-party measured spec)**.
> Sources last read firsthand: 2026-07-04.
> Canonical page: https://espressofit.com/machines/rocket-appartamento/

## Specifications

- **Portafilter diameter:** 58 mm
- **Basket type:** non-pressurized
- **Grouphead standard:** E61 (58mm)
- **Brand:** Rocket Espresso

## Compatible baskets and parts

- IMS B70 Competition 1 Cup (B701TH26.5E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-1-cup/
- IMS B70 Competition 1 Cup H18.5 (B701TH18.5N) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-1-cup-h18-5/
- IMS B70 Competition 1 Cup H19.5 (B701TH19.5N) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-1-cup-h19-5/
- IMS B70 Competition 1 Cup H24.5 (B701TH24.5N) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-1-cup-h24-5/
- IMS B70 Competition Convex 2 Cup (B702TCH26E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup/
- IMS B70 Competition 2 Cup H22.5 M Pattern (B702TH22.5M) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup-h22-5-m/
- IMS B70 Competition 2 Cup H24.5 (B702TH24.5M) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup-h24-5/
- IMS B70 Competition 2 Cup H26.5 (B702TH26.5M) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup-h26-5/
- IMS B70 Competition 2 Cup H28.5 M Pattern (B702TH28.5M) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-2-cup-h28-5-m/
- IMS B70 Competition Convex 2 Cup H20 (B702TCH20E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-convex-2-cup-h20/
- IMS B70 Competition Convex 2 Cup H22 (B702TCH22E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-convex-2-cup-h22/
- IMS B70 Competition Convex 2 Cup H24 (B702TCH24E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-convex-2-cup-h24/
- IMS B70 Competition Convex 2 Cup H28.5 (B702TCH28.5E) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-convex-2-cup-h28-5/
- IMS B70 Competition NanoQuartz 2 Cup H20 (B702TFH20NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h20/
- IMS B70 Competition NanoQuartz 2 Cup H22 (B702TFH22NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h22/
- IMS B70 Competition NanoQuartz 2 Cup H24 (B702TFH24NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h24/
- IMS B70 Competition NanoQuartz 2 Cup H26 (B702TFH26NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h26/
- IMS B70 Competition NanoQuartz 2 Cup H28 (B702TFH28NT) (58mm basket) — https://espressofit.com/baskets/ims-b70-competition-nanoquartz-2-cup-h28/
- IMS DS58.5 Puck Diffuser Screen (puck-screen) — https://espressofit.com/parts/ims-ds58-5-puck-screen/
- IMS E61200IM Integrated Membrane Shower Screen (E61 group) (shower-screen) — https://espressofit.com/parts/ims-e61200im-shower-screen/
- IMS E61200NT Nanotech Membrane Shower Screen (E61 group) (shower-screen) — https://espressofit.com/parts/ims-e61200nt-shower-screen/
- Normcore Magnetic Dosing Funnel V2 (58mm) (dosing-funnel) — https://espressofit.com/parts/normcore-dosing-funnel-58mm/
- Normcore Espresso Puck Screen 58.5mm (316 stainless) (puck-screen) — https://espressofit.com/parts/normcore-puck-screen-58mm/

## Notes

This entry is **measured tier**, not manufacturer-verified. Rocket's own
catalogue confirms the Appartamento's "redesigned E61 brew group" firsthand,
and the E61 is a fixed 58mm standard — every E61 group takes a 58mm
portafilter — so the diameter follows from the group by a documented
inference, corroborated by IMS placing Rocket in its 58/58.4mm tamper series.
What's missing for Tier 1 is only Rocket printing the "58mm" figure itself,
which its page and catalogue (both read firsthand 2026-07-04) do not. The
fitment is reliable; the label is honest about where the number comes from.

## Sources

- https://rocket-espresso.com/products/domestic-models/appartamento
  - Official Rocket Espresso product page, read firsthand 2026-07-04. The specifications table lists boiler capacity (1.80 l), power, dimensions and weight, but does NOT print the portafilter diameter — which is why this entry sits at the measured tier rather than manufacturer-verified, despite the Appartamento being an E61 machine.
- https://rocket-espresso.com/pdf/ROCKET_Domestic_Catalog.pdf
  - Official Rocket Espresso domestic catalogue, read firsthand 2026-07-04. Describes the Appartamento TCA as having a 'redesigned E61 brew group' (E61 groups take 58mm portafilters), but prints no portafilter diameter for the base Appartamento. This is the firsthand basis for the measured-tier 58mm figure — Rocket confirms the E61 group; the diameter follows from the E61 standard.
- https://www.imsfiltri.com/IMS-competition-Catalogue.pdf
  - Official IMS catalogue, read firsthand 2026-07-04: IMS's 'For tamper 58 / 58.4' B70 basket compatibility list names ROCKET — third-party manufacturer corroboration of the 58mm standard, but not a Rocket primary statement.

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Compatibility reference, not a substitute for your machine's manual. Every claim above cites the source it came from; see https://espressofit.com/methodology/ for how entries are verified. Corrections: corrections@espressofit.com.