This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32AX80, 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 SI32AX80 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 80mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32AX80, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32AX80 is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 80mm stroke, delivering a push force of 402 N at 0.5 MPa. It features a G1/8 port and an SUS420J2 stainless piston rod for corrosion resistance. AirTAC replaced this legacy unit with the SAI32AX80, a direct sharing the exact ISO 15552 mounting interface, bore, stroke, output force, port and mounting accessories.
The SAI upgrade introduces an improved piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet, meaning it cannot accept CS1-B/DS1-B sensors. The SAI family also adds SAIL, SAIF and BSAI lock variants absent from the SI line.
| Model | Airtac SI32 Standard Air Cylinder SI32AX80 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32AX80 |
| Bore size | Ø32 mm |
| Stroke | 80 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 SAI32AX80 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 SAI32AX80 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. |
| ×80 | 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 402 N push force at 0.5 MPa to reliably push lightweight molded components out of a machining center.
The SUS420J2 stainless rod option makes this 32mm bore cylinder suitable for repetitive clamping in washdown sorting stations.
An 80mm stroke provides the precise linear movement needed to divert small packages on a high-speed conveyor belt.
To replace the SI32AX80, order the SAI32AX80 to retain the identical ISO 15552 mounting dimensions, 32mm bore, 80mm stroke, G1/8 port and SUS420J2 rod. Because this SKU has no -S magnet, it cannot support position sensing; if switches are needed, specify a magnet-equipped SAI. For sizing, the 32mm bore yields 402 N push at 0.5 MPa; if less force is acceptable, a 25mm bore offers a smaller footprint, while a 40mm bore provides 628 N. Remember a standard cylinder does not hold load without live air—the cushion only decelerates. For load holding, use an external pilot check valve or explore the SAIL lock variant.
Replacement checklist
Yes, the SI32AX80 is discontinued. The direct replacement is the SAI32AX80. It shares the same ISO 15552 mounting interface, 32mm bore, 80mm stroke, output force and G1/8 port, fitting directly into existing fixtures.
This double-acting cylinder uses a G1/8 port. It generates 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, and a theoretical maximum force of 82 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32AX80 replacement — usually within 7-8 hours.