# IMS B70 Competition Convex 2 Cup H22 (B702TCH22E)

> Espresso compatibility data from EspressoFit. Confidence: **manufacturer (Tier 1 — manufacturer primary source read firsthand)**.
> Sources last read firsthand: 2026-08-11.
> Canonical page: https://espressofit.com/baskets/ims-b70-competition-convex-2-cup-h22/

## Specifications

- **Diameter:** 58 mm
- **Depth:** 22 mm
- **Type:** non-pressurized (single-wall)
- **Brand:** IMS

## Fits these machines

- Breville Oracle (58mm portafilter) — https://espressofit.com/machines/breville-oracle/
- ECM Estetika (58mm portafilter) — https://espressofit.com/machines/ecm-estetika/
- ECM Mechanika MAX II (58mm portafilter) — https://espressofit.com/machines/ecm-mechanika-max-ii/
- Flair 58 (58mm portafilter) — https://espressofit.com/machines/flair-58/
- La Marzocco GS3 (58mm portafilter) — https://espressofit.com/machines/la-marzocco-gs3/
- La Marzocco Linea Micra (58mm portafilter) — https://espressofit.com/machines/la-marzocco-linea-micra/
- La Marzocco Linea Mini (58mm portafilter) — https://espressofit.com/machines/la-marzocco-linea-mini/
- Lelit Bianca (PL162T) (58mm portafilter) — https://espressofit.com/machines/lelit-bianca/
- Lelit Elizabeth (PL92T) (58mm portafilter) — https://espressofit.com/machines/lelit-elizabeth/
- Lelit Kate (PL82T) (58mm portafilter) — https://espressofit.com/machines/lelit-kate/
- Lelit MaraX (PL62X) (58mm portafilter) — https://espressofit.com/machines/lelit-marax/
- Lelit Victoria (PL91T) (58mm portafilter) — https://espressofit.com/machines/lelit-victoria/
- Rancilio Silvia (58mm portafilter) — https://espressofit.com/machines/rancilio-silvia/
- Rancilio Silvia Pro (58mm portafilter) — https://espressofit.com/machines/rancilio-silvia-pro/
- Rancilio Silvia Pro X (58mm portafilter) — https://espressofit.com/machines/rancilio-silvia-pro-x/
- Rocket Espresso Appartamento (58mm portafilter) — https://espressofit.com/machines/rocket-appartamento/
- Rocket Espresso Epica (58mm portafilter) — https://espressofit.com/machines/rocket-epica/
- Rocket Espresso Giotto Fast (58mm portafilter) — https://espressofit.com/machines/rocket-giotto/
- Rocket Espresso Mozzafiato Fast (58mm portafilter) — https://espressofit.com/machines/rocket-mozzafiato/
- Rocket Espresso Porta Via (58mm portafilter) — https://espressofit.com/machines/rocket-porta-via/
- Rocket Espresso R Nine One (58mm portafilter) — https://espressofit.com/machines/rocket-r-nine-one/

## Notes

The **22mm** height in IMS's B70 **convex** competition line — a modest step up from the 20mm, still firmly in single-and-a-half territory.

A convex basket has a raised centre to the floor, so the puck is fractionally
thinner in the middle than at the edges. The intent is to counter the tendency
of water to find the centre first: the shorter path through the middle is also
the denser one, which evens out flow across the bed.

Geometry is otherwise standard B70 — Ø70mm border, Ø59mm body, ridgeless, 715
holes of 0.30mm over a Ø49mm perforated area, for a Ø58/58.4mm tamper.

IMS publishes the whole convex family's capacities on one table, and the heights
are a **dose ladder** rather than quality steps:

| Code | Height | Dark | Medium | Light |
|---|---|---|---|---|
| [B702TCH20E](/baskets/ims-b70-competition-convex-2-cup-h20/) | 20mm | 10/12 g | 11/13 g | 14/17 g |
| [B702TCH22E](/baskets/ims-b70-competition-convex-2-cup-h22/) | 22mm | 12/14 g | 13/15 g | 16/19 g |
| [B702TCH24E](/baskets/ims-b70-competition-convex-2-cup-h24/) | 24mm | 14/16 g | 15/17 g | 18/21 g |
| [B702TCH26E](/baskets/ims-b70-competition-2-cup/) | 26mm | 17/19 g | 18.5/21 g | 20.5/23 g |
| [B702TCH28.5E](/baskets/ims-b70-competition-convex-2-cup-h28-5/) | 28.5mm | 19/22 g | 22/25 g | 23/27 g |

Pick by the dose you actually pull. Note how much the roast level moves the
figure — the same basket takes several grams more of a light roast than a dark
one, because lighter beans are denser.

Ridgeless, so it suits a bottomless portafilter well. Same official B70
compatibility as the rest of the series; Gaggia machines take the narrower B68
series and are deliberately not cross-referenced.

## Sources

- https://www.imsfiltri.com/filters/B702TCH22E.html
  - Official IMS Filtri product page ('B702TCH22E'), read firsthand 2026-08-11. Specs verbatim: 'Border: Ø 70 mm', 'Body: Ø 59 mm', 'Height: 22 mm', tamper 'Ø 58/58.4 mm', 'Ridge: Ridgeless', '715 Holes' of 'Hole Diameter: 0.30 mm' in a hexagonal pattern over a 'Perforated Area: Ø 49 mm' optimized for the convex shape. The page's capacity table gives this height as 12/14 gr (dark roasted), 13/15 gr (medium) and 16/19 gr (light), within a family running B702TCH20E (20 mm) through B702TCH28.5E (28.5 mm).
- https://www.imsfiltri.com/IMS-competition-Catalogue.pdf
  - Official IMS Competition Series catalogue, read firsthand 2026-07-04, whose 'For tamper 58 / 58.4' B70 compatibility list names La Marzocco, Rancilio, Lelit, Rocket, ECM and 'BREVILLE (The Oracle)' among the fitting brands — and 'FLAIR ESPRESSO (58)', which is why the Flair 58 is cross-referenced here; Gaggia is assigned to the narrower B68 series, so B70 baskets do not cross-reference Gaggia machines.

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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.