This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X1700S, 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 Airtac SI100 Standard Cylinder SI100X1700S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 1700mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X1700S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100X1700S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 1700mm stroke. It delivers 3927N push and 3681N pull at 0.5MPa via a G1/2 port. Because 1700mm exceeds the 1500mm standard maximum, this is a non-standard made-to-order stroke. The direct replacement is the SAI100X1700S, maintaining the exact ISO 15552 mounting interface, force, and porting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SI line lacked SAIL, SAIF, and BSAI lock variants now available. The -S magnet works with CS1-B/DS1-B sensors; SAI uses current AirTAC switches. Rod material options include carbon, SUS420J2, or SUS304.
| Model | Airtac SI100 Standard Cylinder SI100X1700S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X1700S |
| Bore size | Ø100 mm |
| Stroke | 1700 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 SAI100X1700S 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 SAI100X1700S 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. |
| ×1700 | 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).
Pushes heavy pallets 1700mm between conveyor lines using 3927N force at 0.5MPa, requiring external guides to prevent rod bending.
Applies up to 801kgf maximum clamping force at 1.0MPa to seat large components, relying on adjustable 36mm cushions for end-stop deceleration.
To replace the SI100X1700S, order the SAI100X1700S. Verify the ISO 15552 mounting interface, 100mm bore, 1700mm non-standard stroke, G1/2 port, and the -S magnet. If 1700mm is too long, consider a 100mm bore at 1500mm max standard stroke, or size down to an 80mm bore providing 2513N push at 0.5MPa. For sizing up, a 125mm bore gives 6136N. Note: a 1700mm stroke risks rod bending under side-load—use external guides. A plain cylinder drifts on air loss; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAIF self-valve is unavailable for 100mm bores.
Replacement checklist
Yes, the SI100X1700S is discontinued. The direct replacement is the SAI100X1700S, which is dimensionally interchangeable per ISO 15552 with the same bore, stroke, force, G1/2 port, and mounting.
The 100mm bore features a G1/2 port and delivers 3927N push / 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N at 0.9MPa, and a maximum theoretical force of 801kgf at 1.0MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X1700S replacement — usually within 7-8 hours.