This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X75SH, 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 SI32X75SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 75mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X75SH, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X75SH is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 75mm stroke. Generating 402N push force at 0.5MPa via a G1/8 port, it is replaced by the SAI32X75SH. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, force and accessories.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. It also adds SAIL, SAIF and BSAI variants the SI lacked. With the -S magnet, the SI used CS1-B/DS1-B switches (the SAI uses current switches). The -H Viton seal option raises operating temperature to 0-150C.
| Model | Airtac SI32 Standard Air Cylinder SI32X75SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X75SH |
| Bore size | Ø32 mm |
| Stroke | 75 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 SAI32X75SH 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 SAI32X75SH 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. |
| ×75 | 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 plastic or metal stamped parts out of a press die.
Ideal for securing small electronic housings or PCBs during machining, fitting neatly into tight 32mm bore fixtures.
Handles short 75mm strokes to deflect small cartons on a packaging line, operating efficiently at 30-800mm/s.
To replace the SI32X75SH, order the SAI32X75SH, confirming the ISO 15552 interface, 32mm bore, 75mm stroke, G1/8 port (PT/G/NPT thread), M10x1.25 rod thread and -S magnet. For higher force, the neighbouring 40mm bore yields 628N push at 0.5MPa. For lighter duty, a 25mm stroke reduces footprint. Note that a plain cylinder drifts on air loss; the 27mm cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant. If your application needs a self-contained valve, the SAIF (bores 32-100) is available.
Replacement checklist
Yes, the SI32X75SH is discontinued. The direct replacement is the SAI32X75SH. It is dimensionally interchangeable per ISO 15552, retaining the same 32mm bore, 75mm stroke, G1/8 port, output force and mounting accessories.
The 32mm bore features a G1/8 port. At 0.5MPa it provides 402N push and 345N pull force. At 0.7MPa push is 563N, and at 0.9MPa it is 724N. The theoretical maximum force is 82kgf at 1.0MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X75SH replacement — usually within 7-8 hours.