This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X225SH, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.

The AirTAC SI32 Standard Air Cylinder SI32X225SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 225mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X225SH, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X225SH is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 225mm stroke. It delivers 402N push force at 0.5MPa via a G1/8 port. The direct replacement is SAI32X225SH, retaining the exact interface, force, and mounting.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure. The H seal allows 0-150C heat, and the S magnet pairs with CS1-B/DS1-B sensors.
| Model | Airtac SI32 Standard Air Cylinder SI32X225SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X225SH |
| Bore size | Ø32 mm |
| Stroke | 225 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI32X225SH carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAI32X225SH produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Uses the 402N push force at 0.5MPa to eject small molded components reliably without damaging the product surface.
Clamps delicate test specimens securely; the H Viton seal withstands 0-150C thermal cycling without degrading.
To replace this SI unit, specify SAI32X225SH to match the 32mm bore, 225mm stroke, G1/8 port, and ISO 15552 mounting. The S magnet enables CS1-B/DS1-B sensors, while the H Viton seal handles 0-150C. For higher force, the 40mm bore yields 628N push at 0.5MPa. At 225mm stroke, use guide rails to prevent rod bending. For load holding, use SAIL or an external check valve, as cushions only decelerate.
Replacement checklist
Yes, the SI32X225SH is discontinued. The direct replacement is the SAI32X225SH. It is dimensionally interchangeable per ISO 15552, matching the 32mm bore, 225mm stroke, G1/8 port, and mounting fixtures.
The 32mm bore uses a G1/8 port. It generates 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, and a maximum theoretical force of 82kgf at 1.0MPa. The piston rod is 12mm with an M10x1.25 thread.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X225SH replacement — usually within 7-8 hours.