This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX260S, 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 SI100AX260S
The AirTAC Airtac SI100 Standard Cylinder SI100AX260S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 260mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX260S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke260 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX260S
- 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 SI100AX260S
The AirTAC SI100AX260S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 260mm stroke. It delivers 3927 N push force at 0.5 MPa via a G1/2 port. The direct replacement is the SAI100AX260S, matching the interface, force, and mounting exactly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL lock, SAIF valve, and BSAI clamp-lock variants the SI lacked. The -A suffix specifies a SUS420J2 stainless rod, and the -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100AX260S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX260S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX260S |
| Bore size | Ø100 mm |
| Stroke | 260 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 SAI100AX260S 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 SAI100AX260S 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 SI100AX260S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×260 | 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 SI100AX260S Is Used
Heavy Press Clamping
Secures large metal workpieces in machining centers, utilizing the 3927 N push force at 0.5 MPa to hold parts rigidly against cutting loads.
Pallet Diverting
Actuates heavy-duty diverters on automated packaging lines, where the 260mm stroke provides the reach needed to redirect full pallets smoothly.
Replacing the Airtac SI100 Standard Cylinder SI100AX260S with the SAI100AX260S
To replace the SI100AX260S, order the SAI100AX260S. Confirm the ISO 15552 mounting interface, 100mm bore, 260mm stroke, G1/2 port (PT/G/NPT), and mounting accessory. The -S magnet enables current AirTAC switches (replacing legacy CS1-B/DS1-B), while the -A denotes the SUS420J2 stainless rod. For sizing, a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, whereas the 125mm bore offers 6136 N. Since this is a 260mm stroke, ensure guide alignment to prevent rod-bending side loads. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX260S
- ✓ 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 SI100AX260S FAQ
Yes, the SI100AX260S is discontinued. The direct replacement is the SAI100AX260S. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 260mm stroke, force, G1/2 port, and mounting interface.
This double-acting cylinder features a G1/2 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 force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX260S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX260S replacement — usually within 7-8 hours.