This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X80TC, 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 SI32X80TC 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 SAI32X80TC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X80TC is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm stroke and TC trunnion mount. Delivering 402 N push force at 0.5 MPa through a G1/8 port, it is replaced by the SAI32X80TC. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke and force.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. This no-magnet SKU cannot take a sensor; legacy -S types used CS1-B/DS1-B. For locking, the SI lacked SAIL and BSAI variants now available.
| Model | Airtac SI32 Standard Air Cylinder SI32X80TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X80TC |
| 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 SAI32X80TC 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 SAI32X80TC 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 eject light machined components from a fixture reliably.
Actuates a short 80 mm stroke diverting arm to route small boxes on a packaging line.
To replace the SI32X80TC, order the SAI32X80TC. Confirm the ISO 15552 TC trunnion interface, 32 mm bore, 80 mm stroke, G1/8 port (PT/G/NPT thread options) and M10x1.25 rod thread. This non-magnetic SKU cannot accept a sensor; if sensing is needed, switch to an SAI32X80S and use current AirTAC switches. Sizing both ways: the 402 N push force at 0.5 MPa handles ~241 N safely, but if you need more force, step up to the 40 mm bore (628 N). A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
Yes, the SI32X80TC is discontinued. The direct replacement is the SAI32X80TC. It shares the same ISO 15552 TC mounting interface, 32 mm bore, 80 mm stroke, force and G1/8 port, fitting existing fixtures perfectly.
It has a G1/8 port. Force ratings are 402 N push and 345 N pull at 0.5 MPa, 563 N push at 0.7 MPa, 724 N push at 0.9 MPa, and a theoretical max of 82 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X80TC replacement — usually within 7-8 hours.