This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X1200S, 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 SI32X1200S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 1200mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X1200S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X1200S is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 1200mm stroke. It delivers 402N push force at 0.5MPa via a G1/8 port. Because 1200mm exceeds the 1000mm standard stroke limit for this bore, it is a non-standard, made-to-order unit requiring external guides to prevent rod bending over such a long distance.
The direct replacement is the SAI32X1200S, retaining the exact ISO 15552 mounting interface, M10x1.25 thread, and 27mm cushions. The SAI features an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. Note that a plain cylinder drifts on air loss; for load holding, consider the SAIL lock variant or an external pilot check valve.
| Model | Airtac SI32 Standard Air Cylinder SI32X1200S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X1200S |
| Bore size | Ø32 mm |
| Stroke | 1200 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 SAI32X1200S 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 SAI32X1200S 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. |
| ×1200 | 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).
Handles long-travel linear pushing of light components along an assembly line, utilizing the full 1200mm extension while maintaining a compact 32mm ISO 15552 profile.
Actuates transfer arms between conveyor belts over a 1200mm gap, requiring external guide rails to prevent rod bending under side loads during the movement cycle.
To replace this SI unit, order the SAI32X1200S keeping the 32mm bore, 1200mm stroke, G1/8 port, and -S magnet for CS1-B/DS1-B switches (the SAI uses current AirTAC switches). Verify your ISO 15552 mounting accessories and thread option (PT/G/NPT). At 0.5MPa it pushes 402N and pulls 345N; if undersized, the neighboring 40mm bore yields 628N push. Since 1200mm is a non-standard stroke exceeding the 1000mm max, external guides are mandatory to manage side-load and rod-bending. A standard cylinder does not hold load without air; use an external rod lock or the SAIL/BSAI lock variant for secure holding. The SAIF variant adds a built-in valve if needed.
Replacement checklist
Yes, the SI32X1200S is discontinued. The direct replacement is the AirTAC SAI32X1200S. It shares the identical ISO 15552 mounting interface, 32mm bore, 1200mm stroke, output force, G1/8 port, and cushion dimensions, fitting directly into existing fixtures.
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 max force is 82kgf at 1.0MPa. It operates at 30-800mm/s, uses a G1/8 port, and the 1200mm stroke is a non-standard made-to-order length.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X1200S replacement — usually within 7-8 hours.