This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X1000SH, 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 SI100 Standard Cylinder SI100X1000SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 1000mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X1000SH, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100X1000SH is a discontinued double-acting ISO 15552 profile cylinder with a 1000 mm stroke and a 100 mm bore, delivering 3927 N of push force at 0.5 MPa. This legacy unit features a Viton H high-temperature seal (0 to 150 C) and a built-in piston magnet for CS1-B/DS1-B switches. AirTAC replaced this series with the SAI100X1000SH, a direct upgrade sharing the exact ISO 15552 mounting interface, G1/2 port size, and 801 kgf maximum force.
The SAI replacement retains all dimensional ratings but introduces an upgraded piston seal utilizing two Y-shaped one-way elements for lower start-up pressure and extended service life. The SAI family also expands functionality with SAIL air-released lock, SAIF integrated 4M valve, and BSAI clamp-lock variants that the original SI line lacked.
| Model | Airtac SI100 Standard Cylinder SI100X1000SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X1000SH |
| Bore size | Ø100 mm |
| Stroke | 1000 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI100X1000SH 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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100X1000SH 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). |
|---|---|
| 100 | Bore size in mm. |
| ×1000 | 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).
Ejecting molded parts from hot environments using the Viton H seal rated for 0 to 150 C, leveraging 3927 N of push force at 0.5 MPa.
Pushing heavy pallets along a 1000 mm conveyor path where the external guide manages side loads and the 801 kgf maximum force handles inertia.
Transferring heavy structural components between press stations, utilizing the 200 kg vertical lift capacity and ISO 15552 mounting rigidity.
To replace the discontinued SI100X1000SH, order the SAI100X1000SH direct equivalent, verifying your ISO 15552 mounting hardware (LB, FA, CA, TC), the G1/2 air port, and the M20x1.5 rod thread. Because this unit carries the -S magnet option, confirm your CS1-B/DS1-B legacy sensors or upgrade to current AirTAC switches for the SAI. The -H Viton seal is critical here for your 0 to 150 C environment. Sizing both ways: if 3927 N push at 0.5 MPa is insufficient, the neighboring 125 mm bore yields 6136 N, or you can increase pressure to 0.7 MPa for 5497 N. With a 1000 mm stroke, prevent rod bending and premature seal wear by using an external guide to absorb side loads. A plain cylinder drifts on air loss and the air cushion only decelerates at stroke end; for load holding, specify an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
Yes, the SI100X1000SH is discontinued. The direct replacement is the SAI100X1000SH. It is dimensionally interchangeable per ISO 15552, maintaining the same 100 mm bore, 1000 mm stroke, G1/2 port, and mounting interface. The SAI simply upgrades the piston seal to two Y-shaped elements for longer life.
The bore is 100 mm with a G1/2 air port. Theoretical forces are: 3927 N push and 3681 N pull at 0.5 MPa; 5497 N push at 0.7 MPa; 7068 N push at 0.9 MPa; and a maximum force of 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X1000SH replacement — usually within 7-8 hours.