This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X65S, 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 SI32X65S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 65mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X65S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X65S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 65mm stroke. Delivering 402N push force at 0.5MPa via a G1/8 port, it is replaced by the SAI32X65S. This direct successor matches the exact mounting interface, bore, stroke, force, port and accessories.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. The SAI family also introduces SAIL, SAIF and BSAI lock variants absent from the SI line.
| Model | Airtac SI32 Standard Air Cylinder SI32X65S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X65S |
| Bore size | Ø32 mm |
| Stroke | 65 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 SAI32X65S 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 SAI32X65S 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. |
| ×65 | 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 reliably push lightweight finished components out of a machining center.
The 65mm stroke and compact 32mm bore provide the precise jaw opening and closing motion required for material handling.
To replace the SI32X65S, order the SAI32X65S. Confirm the ISO 15552 interface, 65mm stroke, G1/8 port (PT/G/NPT), M10x1.25 rod thread and the -S magnet for CS1-B/DS1-B switches. For higher force, the neighbouring 40mm bore provides 628N push at 0.5MPa; for lighter duty, consider smaller profiles. Note that a plain cylinder drifts without live air—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
Yes, the SI32X65S is discontinued. The direct replacement is the SAI32X65S. It shares the identical ISO 15552 mounting interface, 32mm bore, 65mm stroke, output force, G1/8 port and mounting accessories, fitting directly into existing fixtures.
The 32mm bore features a G1/8 air port and M10x1.25 rod thread. Force output is 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, 724N push at 0.9MPa, with a theoretical maximum of 82kgf at 1.0MPa. Operating speed is 30-800mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X65S replacement — usually within 7-8 hours.