Festo to AirTAC cylinder cross-reference (ISO 15552)
The verified equivalents for Festo DSBC profile cylinders — with the spec differences shown, not hidden.
Festo’s DSBC ISO 15552 cylinders cross-reference to AirTAC’s SAI series. Both declare conformance to ISO 15552, so for a given bore they share the mounting interface and the rod-end thread — the mount is a drop-in. The changes you set when you order: the port thread (order the AirTAC with a G/BSPP port to match Festo), and watch the pressure window — the AirTAC SAI runs 1.5–10 baragainst the Festo’s wider range (about 0.4–0.6 bar up to 12 bar), so it needs more pressure to start and has a lower maximum. Specify Viton seals if you run above 70 °C. Overall verdict: equivalent-with-changes.
Verified cross-references
AirTAC International Group is headquartered in Taiwan and manufactures in mainland China (Ningbo, Foshan) and Taiwan. Each card shows the side-by-side specs and cites its catalog sources.
| Spec | Festo | AirTAC | Difference |
|---|---|---|---|
| Bore | 32 mm | 32 mm | match |
| Stroke | 100 mm | 100 mm | match |
| Mounting | ISO 15552 | ISO 15552 | shared mount |
| Rod-end thread | M10 × 1.25 | M10 × 1.25 | match |
| Port thread | G 1/8 (BSPP) | 1/8 — G optional | order G to match |
| Operating pressure | 0.6–12 bar | 1.5–10 bar | narrower — check yours fits |
| Max temperature | 80 °C | 70 °C | lower — Viton for higher |
Before you substitute: Same ISO 15552 mount and rod-end thread as the Festo DSBC — dimensionally interchangeable on the mounting. Check the pressure window: the AirTAC SAI runs 1.5–10 bar, so it needs more pressure to start than the Festo and its maximum is 10 bar (the Festo runs to 12) — confirm your working pressure sits inside 1.5–10 bar. Order the AirTAC with a G (BSPP) port to match Festo, and specify Viton seals if you run above 70 °C. Both use a polyurethane rod seal as standard.
Sources: Festo DSBC datasheet (rev. 2017/12); AirTAC SAI ISO 15552 catalog. Both series declare ISO 15552. Verified 2026-07-24.
| Spec | Festo | AirTAC | Difference |
|---|---|---|---|
| Bore | 50 mm | 50 mm | match |
| Stroke | 100 mm | 100 mm | match |
| Mounting | ISO 15552 | ISO 15552 | shared mount |
| Rod-end thread | M16 × 1.5 | M16 × 1.5 | match |
| Port thread | G 1/4 (BSPP) | 1/4 — G optional | order G to match |
| Operating pressure | 0.4–12 bar | 1.5–10 bar | narrower — check yours fits |
| Max temperature | 80 °C | 70 °C | lower — Viton for higher |
Before you substitute: Same ISO 15552 mount and rod-end thread as the Festo DSBC — dimensionally interchangeable on the mounting. Check the pressure window: the AirTAC SAI runs 1.5–10 bar, so it needs more pressure to start than the Festo and its maximum is 10 bar (the Festo runs to 12) — confirm your working pressure sits inside 1.5–10 bar. Order the AirTAC with a G (BSPP) port to match Festo, and specify Viton seals if you run above 70 °C. Both use a polyurethane rod seal as standard.
Sources: Festo DSBC datasheet (rev. 2017/12); AirTAC SAI ISO 15552 catalog. Both series declare ISO 15552. Verified 2026-07-24.
| Spec | Festo | AirTAC | Difference |
|---|---|---|---|
| Bore | 63 mm | 63 mm | match |
| Stroke | 200 mm | 200 mm | match |
| Mounting | ISO 15552 | ISO 15552 | shared mount |
| Rod-end thread | M16 × 1.5 | M16 × 1.5 | match |
| Port thread | G 3/8 (BSPP) | 3/8 — G optional | order G to match |
| Operating pressure | 0.4–12 bar | 1.5–10 bar | narrower — check yours fits |
| Max temperature | 80 °C | 70 °C | lower — Viton for higher |
Before you substitute: Same ISO 15552 mount and rod-end thread as the Festo DSBC — dimensionally interchangeable on the mounting. Check the pressure window: the AirTAC SAI runs 1.5–10 bar, so it needs more pressure to start than the Festo and its maximum is 10 bar (the Festo runs to 12) — confirm your working pressure sits inside 1.5–10 bar. Order the AirTAC with a G (BSPP) port to match Festo, and specify Viton seals if you run above 70 °C. Both use a polyurethane rod seal as standard.
Sources: Festo DSBC datasheet (rev. 2017/12); AirTAC SAI ISO 15552 catalog. Both series declare ISO 15552. Verified 2026-07-24.
What matches, and what to set when you order
ISO 15552 fixes the mounting dimensions and the rod-end thread for each bore, so a Festo DSBC and an AirTAC SAI of the same bore are interchangeable on the mount. The differences are in the specs the standard leaves to the manufacturer:
- Pressure window. This is the main one for a Festo swap. The AirTAC SAI works from 1.5 to 10 bar; the Festo DSBC works from about 0.4 bar to 12 bar. If your line runs below 1.5 bar or above 10 bar, the AirTAC is out of its rated range — check your working pressure first.
- Port thread. Festo ships a G (BSPP) port. Order the AirTAC SAI with the G option so the port matches — see port threads: G (BSPP) vs NPT.
- Temperature and seal. Both use a polyurethane rod seal as standard, rated to about 70 °C on the AirTAC and 80 °C on the Festo. For higher temperatures, specify Viton (FKM) seals on the AirTAC.
As on every page, we do not publish a cycle-life figure for either series because neither manufacturer publishes one.
Frequently asked
Is AirTAC a drop-in replacement for Festo DSBC ISO 15552 cylinders?
On the mounting, yes — Festo's DSBC and AirTAC's SAI both declare ISO 15552, so for a given bore they share the mounting interface and the rod-end thread. Overall it is an equivalent-with-changes: confirm your working pressure sits inside the AirTAC's 1.5–10 bar window (the Festo runs 0.4–12 bar), order the AirTAC with a G (BSPP) port to match Festo, and specify Viton seals if you run above 70 °C.
Which AirTAC series matches Festo's DSBC?
AirTAC's SAI series (legacy designation SI) is the ISO 15552 profile counterpart to Festo's DSBC. Both series declare conformance to ISO 15552.
What is the pressure difference between Festo DSBC and AirTAC SAI?
The Festo DSBC operates from about 0.4–0.6 bar up to 12 bar. The AirTAC SAI operates from 1.5 to 10 bar. So the AirTAC needs more pressure to start and has a lower ceiling — confirm your application runs inside 1.5–10 bar before you substitute.
Is AirTAC a Chinese brand?
AirTAC International Group is headquartered in Taiwan and manufactures in mainland China (Ningbo and Foshan) and Taiwan. Its cylinders are China-manufactured.
Sources
- Festo DSBC datasheet — “Standards-based cylinders DSBC, to ISO 15552.”
- AirTAC SAI series ISO 15552 catalog — “In accordance with ISO15552 standard.”
- ISO 15552 — metric mounting and accessories dimensions for interchangeability.
Want a quote on the AirTAC equivalent?
Send us the Festo part you run today. We confirm the pressure range, port thread, and the rest of the spec match before you commit.