This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX115S, 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 SI100AX115S
The AirTAC Airtac SI100 Standard Cylinder SI100AX115S 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 SAI100AX115S, 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 → SAI100AX115S
- 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 SI100AX115S
The AirTAC SI100AX115S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 115mm stroke. It delivers 3927N push force at 0.5MPa. The direct replacement is the SAI100AX115S, featuring the same G1/2 port, M20x1.5 rod thread, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. This -A variant has a SUS420J2 stainless rod, and the -S magnet works with CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100AX115S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX115S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX115S |
| 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 SAI100AX115S 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 SAI100AX115S 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 SI100AX115S
| 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 SI100AX115S Is Used
Heavy Press Clamping
Ideal for exerting sustained 3927N clamping force on large metal fabrications during machining or welding operations.
Pallet Diversion
Provides robust actuation to push heavy loaded pallets off a main conveyor line onto a secondary packaging spur.
Replacing the Airtac SI100 Standard Cylinder SI100AX115S with the SAI100AX115S
To replace the SI100AX115S, order the SAI100AX115S keeping the identical 100mm bore, 115mm stroke, G1/2 port, and ISO 15552 mounting. The SAI family adds SAIL lock, SAIF valve, and BSAI clamp-lock variants the SI lacked. For sizing down, an 80mm bore yields 2513N [email protected]; for more force, a 125mm bore yields 6136N. A plain cylinder drifts on air loss as the cushion only decelerates; for load holding use an external rod lock or pilot check valve. The SAI uses current AirTAC switches for the magnet.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX115S
- ✓ 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 SI100AX115S FAQ
Yes, the SI100AX115S is discontinued. The direct replacement is the SAI100AX115S. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 115mm stroke, output force, G1/2 port, and mounting accessories.
The bore is 100mm with a G1/2 air port. The thrust is 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical max of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX115S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX115S replacement — usually within 7-8 hours.