This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X200STC, 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 SI32X200STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 200mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X200STC, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X200STC is a discontinued double-acting ISO 15552 profile cylinder with a 32 mm bore and 200 mm stroke. It delivers 402 N push force at 0.5 MPa through a G1/8 port. AirTAC replaced this legacy unit with the SAI32X200STC, a direct sharing the same TC trunnion mount, M10x1.25 rod thread, and dimensions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. It also adds SAIL, SAIF, and BSAI variants absent from the SI line. The -S magnet works with CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
| Model | Airtac SI32 Standard Air Cylinder SI32X200STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X200STC |
| Bore size | Ø32 mm |
| Stroke | 200 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 SAI32X200STC 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 SAI32X200STC 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. |
| ×200 | 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).
Provides reliable 402 N push force at 0.5 MPa to eject machined components from fixtures on automated lines.
Actuates diverting gates along packaging conveyors, utilizing the 200 mm stroke to route lightweight boxes efficiently.
To replace the SI32X200STC, order the SAI32X200STC. It drops directly into existing ISO 15552 fixtures via the TC trunnion mount, keeping the 32 mm bore, 200 mm stroke, and G1/8 port. Confirm your thread standard (PT, G, or NPT) and retain the -S magnet for current AirTAC switch compatibility. For sizing, neighbouring bores like 40 mm offer higher force (628 N push at 0.5 MPa). Note that a plain cylinder does not hold load without live air; for drop prevention use an external pilot check valve or the SAIL lock variant. Since the 200 mm stroke exceeds 300 mm? No, but always ensure guide alignment to prevent rod bending.
Replacement checklist
Yes, the SI32X200STC is discontinued. The direct replacement is the SAI32X200STC. It is dimensionally interchangeable per ISO 15552, matching the 32 mm bore, 200 mm stroke, G1/8 port, and TC mounting interface.
This double-acting cylinder uses a G1/8 port. 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 SAI32X200STC replacement — usually within 7-8 hours.