This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX240S, 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 SI100AX240S
The AirTAC Airtac SI100 Standard Cylinder SI100AX240S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 240mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX240S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke240 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX240S
- 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 SI100AX240S
The AirTAC SI100AX240S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 240mm stroke. It delivers 3927 N push and 3681 N pull at 0.5 MPa through a G1/2 port. The direct replacement is the SAI100AX240S, which shares the same interface, force, and mounting fixtures.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This unit includes the -A SUS420J2 stainless rod and -S magnet for CS1-B/DS1-B switches.
Airtac SI100 Standard Cylinder SI100AX240S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX240S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX240S |
| Bore size | Ø100 mm |
| Stroke | 240 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 SAI100AX240S 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 SAI100AX240S 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 SI100AX240S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×240 | 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 SI100AX240S Is Used
Heavy Press Clamping
Generates 5497 N at 0.7 MPa to secure heavy steel plates during machining operations.
Pallet Diverting
Uses the 240mm stroke and 801 kgf max theoretical force to push loaded pallets onto secondary lines.
Replacing the Airtac SI100 Standard Cylinder SI100AX240S with the SAI100AX240S
To replace the SI100AX240S, order the SAI100AX240S. Confirm the ISO 15552 mounting interface, 100mm bore, 240mm stroke, G1/2 port (PT/G/NPT), and mounting accessory. The -S magnet enables current AirTAC switches (replacing legacy CS1-B/DS1-B), and the -A rod specifies SUS420J2 stainless steel. Sizing both ways: this bore gives 3927 N push @0.5 MPa; if undersized, an 80mm bore yields 2513 N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for holding, or specify the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX240S
- ✓ 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 SI100AX240S FAQ
Yes, the SI100AX240S is discontinued. The direct replacement is the SAI100AX240S. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 240mm stroke, G1/2 port, and mounting interface.
It delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, and 7068 N at 0.9 MPa, with a theoretical max of 801 kgf at 1.0 MPa. The operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX240S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX240S replacement — usually within 7-8 hours.