This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X570S, 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 SI32X570S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 570mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X570S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X570S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 570mm stroke. Delivering 402N push at 0.5MPa via a G1/8 port, it is directly replaced by the SAI32X570S direct equivalent.
The SAI upgrade features two Y-shaped piston seals for low start-up pressure and long life. It retains CS1-B/DS1-B legacy sensors, while the SAI family adds SAIL lock and SAIF valve variants.
| Model | Airtac SI32 Standard Air Cylinder SI32X570S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X570S |
| Bore size | Ø32 mm |
| Stroke | 570 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 SAI32X570S 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 SAI32X570S 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. |
| ×570 | 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).
Ideal for pushing small machined components out of fixtures, utilizing the 402N push force and 570mm reach to clear the machining envelope safely.
Sort light boxes on a packaging line where the 20kg vertical lift capacity and extended stroke provide reliable lateral movement without overwhelming the system.
Automates the opening and closing of elevated discharge gates on storage bins, taking advantage of the long 570mm travel to fully clear material flow paths.
To replace the SI32X570S, order the SAI32X570S ensuring the ISO 15552 mounting interface, 32mm bore, 570mm stroke, G1/8 port and -S magnet match your fixture. For sizing, the neighbouring 40mm bore yields 628N push at 0.5MPa. Because this is a 570mm stroke, use an external guide to prevent rod bending and side-load wear. The air cushion only decelerates; for load holding on air loss, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
Yes, the SI32X570S is discontinued. The direct replacement is the SAI32X570S, which shares the identical ISO 15552 mounting interface, 32mm bore, 570mm stroke, output force, G1/8 port and mounting accessories.
The G1/8 port bore delivers push 402N and pull 345N at 0.5MPa, push 563N at 0.7MPa, and a theoretical max force 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 SAI32X570S replacement — usually within 7-8 hours.