This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X800S, 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 SI100X800S
The AirTAC Airtac SI100 Standard Cylinder SI100X800S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 800mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X800S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X800S
- 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 SI100X800S
The AirTAC SI100X800S is a discontinued double-acting ISO 15552 profile cylinder with an 800 mm stroke and a 100 mm bore, delivering 3927 N push force at 0.5 MPa. Because this SI unit is end-of-life, you should order the direct replacement: the SAI100X800S. It shares the same ISO 15552 mounting interface, 100 mm bore, 800 mm stroke, output force, G1/2 port and accessories, fitting existing fixtures perfectly.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also introduces SAIL, SAIF and BSAI lock variants the SI line lacked. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches.
Airtac SI100 Standard Cylinder SI100X800S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X800S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X800S |
| Bore size | Ø100 mm |
| Stroke | 800 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 SAI100X800S 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 SAI100X800S 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 SI100X800S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×800 | 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 SI100X800S Is Used
Pallet Transfer
Drives heavy pallets along a 800 mm stroke length in packaging lines, utilising the 3927 N push force at 0.5 MPa to shift full unit loads between processing stations.
Heavy Press Ejection
Ejects formed metal components from large hydraulic presses, relying on the adjustable 36 mm air cushions at both ends to decelerate the 25 mm rod smoothly.
Replacing the Airtac SI100 Standard Cylinder SI100X800S with the SAI100X800S
To replace the discontinued SI100X800S, order the SAI100X800S direct cylinder, confirming the ISO 15552 interface, 100 mm bore, 800 mm stroke, G1/2 port (PT/G/NPT) and mounting accessory. The -S magnet equates to legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. Sizing both ways: a neighbouring 80 mm bore yields 2513 N push at 0.5 MPa, whereas the 125 mm bore yields 6136 N. Note that a plain cylinder drifts on air loss because the cushion only decelerates; for load holding, use an external rod lock or the SAIL/BSAI lock variant. With an 800 mm stroke, prevent rod-bending by guiding the load externally to avoid side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X800S
- ✓ 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 SI100X800S FAQ
Yes, the SI100X800S is discontinued. The direct replacement is the SAI100X800S. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 800 mm stroke, output force, G1/2 port and mounting interface.
The 100 mm bore uses a G1/2 port. Force ratings 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 theoretical maximum of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X800S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X800S replacement — usually within 7-8 hours.