This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX115, 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 SI100AX115
The AirTAC SI100 Standard Cylinder SI100AX115 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 115mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX115, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke115 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX115
- 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 SI100AX115
The AirTAC SI100AX115 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 115mm stroke, delivering 3927N push force at 0.5MPa. This specific SKU features a SUS420J2 stainless steel piston rod for corrosion resistance but lacks a magnet, meaning it cannot accept position sensors. The direct replacement is the SAI100AX115, sharing the same G1/2 port, M20x1.5 thread, and ISO 15552 mounting interface.
When upgrading to the SAI100AX115, you gain an improved piston seal with two Y-shaped one-way elements that lower start-up pressure and extend service life. If your fixture requires load holding on air loss, note that neither the legacy SI nor the plain SAI prevents drift; you must use an external pilot check valve or the SAIL/BSAI lock variants.
Airtac SI100 Standard Cylinder SI100AX115 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX115 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX115 |
| Bore size | Ø100 mm |
| Stroke | 115 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 SAI100AX115 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 SAI100AX115 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 SI100AX115
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×115 | 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 SI100AX115 Is Used
Heavy-Duty Pressing
Drives stamping and forming stations requiring high force, utilizing the 3927N push capacity at 0.5MPa.
Product Diversion
Actuates heavy diverters on packaging lines, with the 115mm stroke moving goods cleanly between belts.
Replacing the Airtac SI100 Standard Cylinder SI100AX115 with the SAI100AX115
To replace the discontinued SI100AX115, order the SAI100AX115. Verify your existing fixture's ISO 15552 mounting interface, 100mm bore, 115mm stroke, and G1/2 port. Because this specific legacy unit uses the -A rod option, confirm if you still need the SUS420J2 stainless rod or if the default carbon steel rod suffices. Also, since this SKU lacks a magnet (-S), it cannot support switches; if you now require sensing, order the SAI equivalent with an S suffix and use current AirTAC switches instead of the legacy CS1-B/DS1-B. Sizing both ways: this 100mm bore yields 3927N push at 0.5MPa; dropping to an 80mm bore reduces force to 2513N, while increasing pressure to 0.7MPa on the 100mm bore yields 5497N. For load holding without live air, the cushion only decelerates; select the SAIL or BSAI lock variant, or add an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX115
- ✓ 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 SI100AX115 FAQ
Yes, the AirTAC SI100AX115 is discontinued. The direct replacement is the SAI100AX115. It is dimensionally interchangeable per ISO 15552, retaining the exact same 100mm bore, 115mm stroke, G1/2 port, and mounting interface. The SAI simply upgrades the piston seal for lower start-up pressure.
This 100mm bore cylinder features a G1/2 air port and an M20x1.5 rod thread. The output force is 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, and 7068N push at 0.9MPa. The theoretical maximum force is 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX115
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX115 replacement — usually within 7-8 hours.