This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X1120S, 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.
Airtac SI100 Standard Cylinder SI100X1120S
The AirTAC SI100 Standard Cylinder SI100X1120S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 1120mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X1120S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke1120 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X1120S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI100 Standard Cylinder SI100X1120S
The AirTAC SI100X1120S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 1120mm stroke. It delivers 3927N push force at 0.5MPa through a G1/2 port. The direct replacement is the SAI100X1120S, matching the exact interface, stroke, force and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF and BSAI lock variants the SI lacked. This -S SKU uses CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X1120S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X1120S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X1120S |
| Bore size | Ø100 mm |
| Stroke | 1120 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 SAI100X1120S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100X1120S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI100 Standard Cylinder SI100X1120S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×1120 | 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).
Where the Airtac SI100 Standard Cylinder SI100X1120S Is Used
Long-Stroke Diversion
Pushes heavy pallets across wide transfer lines using the full 1120mm stroke and 3927N force.
Large Press Ejection
Kicks finished parts out of heavy stamping machinery, relying on adjustable 36mm cushions.
Replacing the Airtac SI100 Standard Cylinder SI100X1120S with the SAI100X1120S
To replace the SI100X1120S, order the SAI100X1120S keeping the same ISO 15552 mounting, G1/2 port, M20x1.5 rod thread and magnet. Double check if 3927N at 0.5MPa is sufficient, or step up to a 125mm bore for 6136N. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding use an external rod lock, pilot check valve, or the SAIL/BSAI variant. At 1120mm stroke, prevent rod bending by using external guides to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X1120S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI100 Standard Cylinder SI100X1120S FAQ
Yes, the SI100X1120S is discontinued. The direct replacement is the SAI100X1120S, which shares the identical ISO 15552 mounting interface, 100mm bore, 1120mm stroke, force, G1/2 port and accessories.
It has a G1/2 port. Theoretical forces are 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a maximum of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X1120S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X1120S replacement — usually within 7-8 hours.