This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX900, 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 SI100AX900
The AirTAC SI100 Standard Cylinder SI100AX900 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 SAI100AX900, 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 → SAI100AX900
- 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 SI100AX900
The AirTAC SI100AX900 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 900mm stroke. It delivers 3927 N push and 3681 N pull at 0.5 MPa through a G1/2 port. The direct replacement is the SAI100AX900, matching the interface, force, and stroke exactly.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. This SKU has a SUS420J2 stainless rod (A) but lacks a magnet, so it cannot take CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100AX900 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX900 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX900 |
| 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 SAI100AX900 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 SAI100AX900 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 SI100AX900
| 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 SI100AX900 Is Used
Heavy Material Transfer
Drives large pallets or heavy assemblies over 900mm distances where 3927N of push force at 0.5 MPa is required.
Large Press Ejection
Ejects heavy finished parts from machinery using the 100mm bore's 801 kgf maximum theoretical force capability.
Replacing the Airtac SI100 Standard Cylinder SI100AX900 with the SAI100AX900
To replace the SI100AX900, order the SAI100AX900. It drops into existing ISO 15552 fixtures with the same 100mm bore, 900mm stroke, G1/2 port, and M20x1.5 rod thread. If you need less force, the 80mm bore yields 2513 N push at 0.5 MPa; for more power, the 125mm bore gives 6136 N. Because this is a 900mm stroke, use external guides to prevent rod bending and side-load wear. This non-magnet SKU cannot accept position sensors. For load holding on air loss, the cushion only decelerates; add an external pilot check valve or use the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX900
- ✓ 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 SI100AX900 FAQ
Yes, the SI100AX900 is discontinued. The direct replacement is the SAI100AX900. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 900mm stroke, G1/2 port, and mounting interface.
It features a G1/2 air port. 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, and a maximum theoretical force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX900
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX900 replacement — usually within 7-8 hours.