Rocket Espresso R Nine One

measured spec · 15 July 2026

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

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Compatible baskets

Compatible parts

Puck screens

IMS DS58.5 Puck Diffuser Screen (58mm)

FAQ

What size portafilter does the Rocket Espresso R Nine One use?: The Rocket Espresso R Nine One uses a 58mm portafilter (58mm (saturated group)).
Do standard 58mm baskets fit the Rocket Espresso R Nine One?: Yes — the Rocket Espresso R Nine One uses the 58mm commercial standard, so standard 58mm baskets fit. Depth and shape still vary between baskets, so check the individual entries below.
Does the Rocket Espresso R Nine One take pressurized or non-pressurized baskets?: It uses non-pressurized baskets.
Which baskets are confirmed to fit the Rocket Espresso R Nine One?: IMS B70 Competition 1 Cup (B701TH26.5E); IMS B70 Competition 1 Cup H18.5 (B701TH18.5N); IMS B70 Competition 1 Cup H19.5 (B701TH19.5N); IMS B70 Competition 1 Cup H24.5 (B701TH24.5N); IMS B70 Competition Convex 2 Cup (B702TCH26E); IMS B70 Competition 2 Cup H22.5 M Pattern (B702TH22.5M); IMS B70 Competition 2 Cup H24.5 (B702TH24.5M); IMS B70 Competition 2 Cup H26.5 (B702TH26.5M); IMS B70 Competition 2 Cup H28.5 M Pattern (B702TH28.5M); IMS B70 Competition Convex 2 Cup H20 (B702TCH20E); IMS B70 Competition Convex 2 Cup H22 (B702TCH22E); IMS B70 Competition Convex 2 Cup H24 (B702TCH24E); IMS B70 Competition Convex 2 Cup H28.5 (B702TCH28.5E); IMS B70 Competition NanoQuartz 2 Cup H20 (B702TFH20NT); IMS B70 Competition NanoQuartz 2 Cup H22 (B702TFH22NT); IMS B70 Competition NanoQuartz 2 Cup H24 (B702TFH24NT); IMS B70 Competition NanoQuartz 2 Cup H26 (B702TFH26NT); IMS B70 Competition NanoQuartz 2 Cup H28 (B702TFH28NT) — each verified against manufacturer sources (listed below).

Sources

https://rocket-espresso.com/pdf/ROCKET_Domestic_Catalog.pdf (archived) — Official Rocket Espresso domestic catalogue, read firsthand 2026-07-15. The R Nine One page states verbatim it is 'Equipped with a fully saturated group, dual stainless-steel boilers, PID temperature control and a full pressure-profiling system'. The catalogue prints no portafilter diameter, and this is a saturated group (not E61), so the 58mm figure rests on the measured source below.
https://www.imsfiltri.com/IMS-competition-Catalogue.pdf (archived) — Official IMS Filtri competition catalogue, read firsthand 2026-07-13. Its B70 (tamper 58 / 58.4 mm) list — headed 'E61 & compatible groups' and explicitly including saturated-group makers such as LA MARZOCCO, SLAYER and SYNESSO — names ROCKET among the 58mm brands. A basket maker's measured fitment, the basis for the diameter here.

Spot an error? The fastest fix is the source itself —send us the manufacturer page that contradicts this entry and we'll correct it and cite it. See how we verify.