This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X240S, 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 SI100X240S
The AirTAC Airtac SI100 Standard Cylinder SI100X240S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 240mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X240S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke240 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X240S
- 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 SI100X240S
The AirTAC SI100X240S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 240mm stroke. Delivering 3927 N push force at 0.5 MPa through a G1/2 port, it is replaced by the direct replacement SAI100X240S. The SAI maintains the exact ISO 15552 mounting interface, bore, stroke, force and port for seamless fixture integration.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family adds SAIL, SAIF and BSAI lock variants the SI lacked. This -S SKU uses CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X240S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X240S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X240S |
| Bore size | Ø100 mm |
| Stroke | 240 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 SAI100X240S 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 SAI100X240S 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 SI100X240S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×240 | 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 SI100X240S Is Used
Heavy-Duty Pressing
Drives large stamping and riveting fixtures using 5497 N push force at 0.7 MPa, relying on the 36mm adjustable air cushions to absorb end-of-stroke impact.
Bulk Material Diversion
Actuates heavy lane changers and sorting gates on high-throughput packaging lines, operating reliably at speeds between 30-800 mm/s.
Replacing the Airtac SI100 Standard Cylinder SI100X240S with the SAI100X240S
To replace the SI100X240S, order the SAI100X240S. Confirm the ISO 15552 mounting interface, 100mm bore, 240mm stroke, G1/2 port (PT/G/NPT), M20x1.5 rod thread, and mounting accessory. The -S magnet enables CS1-B/DS1-B switches (the SAI uses current AirTAC switches). Sizing both ways: a neighbouring 80mm bore yields 2513 N [email protected], while a 125mm bore yields 6136 N. Note: a plain cylinder drifts on air loss; the cushion only decelerates. For held loads, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. At 240mm stroke, guide rods prevent side-load rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X240S
- ✓ 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 SI100X240S FAQ
Yes, the AirTAC SI100X240S is discontinued. The direct replacement is the SAI100X240S. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 240mm stroke, output force, G1/2 port and mounting interface, so it drops directly into existing fixtures.
The 100mm bore features a G1/2 air port and M20x1.5 rod thread. Force output is 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, with a theoretical max of 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X240S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X240S replacement — usually within 7-8 hours.