This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X30TC, 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 SI32X30TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 30mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X30TC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X30TC is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 30 mm stroke. Delivering 402 N push force at 0.5 MPa, it is replaced by the SAI32X30TC. This direct successor shares the same TC trunnion mount, G1/8 port, and interface, but adds an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Because this specific SKU lacks a magnet (-S), it cannot accept position sensors.
The SAI family also introduces variants the SI lacked, such as the SAIL air-released lock and BSAI clamp-lock for load holding, plus SAIF integrated valves. If high temperatures are needed, Viton H seals raise the operating range to 150 C.
| Model | Airtac SI32 Standard Air Cylinder SI32X30TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X30TC |
| Bore size | Ø32 mm |
| Stroke | 30 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 SAI32X30TC 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 SAI32X30TC 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. |
| ×30 | 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 compact 30 mm clamping tasks in machining fixtures where a 402 N push force securely holds light components.
Provides rapid 30 mm ejection of small parts from automated assemblies, operating at speeds between 30 and 800 mm/s.
Suitable for actuating small pneumatic diverter gates in packaging lines, utilizing the integrated TC trunnion mount.
To replace the SI32X30TC, order the SAI32X30TC. Confirm the ISO 15552 TC trunnion mounting interface, 32 mm bore, 30 mm stroke, and G1/8 port (available in PT, G, or NPT). Since this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped version if sensing is required. For sizing alternatives, a 40 mm bore offers 628 N push at 0.5 MPa, while dropping to a smaller bore reduces the footprint. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external pilot check valve or the SAIL/BSAI lock variant for load holding.
Replacement checklist
Yes, the SI32X30TC is discontinued. The direct replacement is the SAI32X30TC. It shares the same ISO 15552 mounting interface, 32 mm bore, 30 mm stroke, G1/8 port, and output force, fitting directly into existing TC trunnion fixtures.
The 32 mm bore features a G1/8 port and a 12 mm rod with an M10x1.25 thread. Force output is 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 maximum of 82 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X30TC replacement — usually within 7-8 hours.