This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X900S, 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 SI100X900S
The AirTAC Airtac SI100 Standard Cylinder SI100X900S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 900mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X900S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X900S
- 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 SI100X900S
The AirTAC SI100X900S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 900mm stroke. It delivers 3927 N push force at 0.5 MPa via a G1/2 port. AirTAC replaced this legacy unit with the SAI100X900S, a direct upgrade sharing the exact ISO 15552 mounting interface, bore, stroke, output force, and accessories.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -S suffix means this SKU has a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI family also adds SAIL lock, SAIF valve, and BSAI clamp-lock variants.
Airtac SI100 Standard Cylinder SI100X900S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X900S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X900S |
| Bore size | Ø100 mm |
| Stroke | 900 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 SAI100X900S 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 SAI100X900S 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 SI100X900S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×900 | 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 SI100X900S Is Used
Automated Pressing
Ideal for applying steady 3927 N clamping or pressing force at 0.5 MPa in heavy assembly lines.
Long-Stroke Diversion
The 900mm stroke excels at pushing heavy pallets or products across wide conveyor transfer zones.
Replacing the Airtac SI100 Standard Cylinder SI100X900S with the SAI100X900S
To replace the SI100X900S, order the SAI100X900S. Confirm the ISO 15552 mounting interface, the 100mm bore, the 900mm stroke, the G1/2 port (PT/G/NPT thread options), and your mounting accessory (LB, FA, CA, TC, etc.). The -S magnet is present for CS1-B/DS1-B switches. When sizing both ways, a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore yields 6136 N. Note that a plain cylinder drifts on air loss because the cushion only decelerates; for load holding, specify the SAIL or BSAI lock variant, or use an external rod lock. At 900mm stroke, prevent rod bending by guiding the load externally to avoid side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X900S
- ✓ 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 SI100X900S FAQ
Yes, the SI100X900S is discontinued. The direct replacement is the SAI100X900S. It shares the identical ISO 15552 mounting interface, 100mm bore, 900mm stroke, output force, and G1/2 port, fitting existing fixtures perfectly.
This 100mm bore double-acting cylinder features a G1/2 air port. It delivers 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 SAI100X900S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X900S replacement — usually within 7-8 hours.