This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX100SN, 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 SI100AX100SN
The AirTAC Airtac SI100 Standard Cylinder SI100AX100SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 100mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX100SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX100SN
- 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 SI100AX100SN
The AirTAC SI100AX100SN is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 100mm stroke. Featuring a SUS420J2 stainless steel rod, NBR seals, and a piston magnet for CS1-B/DS1-B switches, it delivers 3927 N push force at 0.5 MPa. The direct replacement is the SAI100AX100SN, which shares the exact G1/2 port, M20x1.5 thread, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. Note that plain cylinders drift without live air; for held loads, consider the SAIL or BSAI lock variants.
Airtac SI100 Standard Cylinder SI100AX100SN Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX100SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX100SN |
| Bore size | Ø100 mm |
| Stroke | 100 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 SAI100AX100SN 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 SAI100AX100SN 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 SI100AX100SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×100 | 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 SI100AX100SN Is Used
Heavy Stamping Press
Drives heavy stamping dies requiring 3927 N push force at 0.5 MPa, utilizing the 100mm bore and adjustable 36mm cushions to absorb end-of-stroke impact.
Automated Diversion Gate
Actuates heavy diversion gates on high-throughput conveyors, where the G1/2 port and 30-800 mm/s speed range ensure rapid, stable cycling.
Replacing the Airtac SI100 Standard Cylinder SI100AX100SN with the SAI100AX100SN
To replace the SI100AX100SN, order the SAI100AX100SN. Confirm the ISO 15552 mounting interface, the 100mm stroke, the G1/2 air port (PT/G/NPT thread options), and the -S magnet for current AirTAC switches. If sizing down, the 80mm bore yields 2513 N push at 0.5 MPa; if sizing up, the 125mm bore yields 6136 N. For applications requiring load holding on air loss, a plain cylinder drifts because the cushion only decelerates—use an external pilot check valve or the SAIL/BSAI lock variants. The -A rod is SUS420J2 stainless steel, and the -N seal is NBR for -20 to +70 C (Viton H raises this to 150 C).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX100SN
- ✓ 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 SI100AX100SN FAQ
Yes, the SI100AX100SN is discontinued. The direct replacement is the SAI100AX100SN. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 100mm stroke, G1/2 port, and mounting fixtures.
The bore is 100mm with 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 theoretical max of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX100SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX100SN replacement — usually within 7-8 hours.