This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX90S, 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 SI100AX90S
The AirTAC Airtac SI100 Standard Cylinder SI100AX90S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 90mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX90S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke90 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX90S
- 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 SI100AX90S
The AirTAC SI100AX90S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 90mm stroke, delivering 3927 N push force at 0.5 MPa. It features a SUS420J2 stainless piston rod, a G1/2 air port, and a built-in magnet for legacy CS1-B/DS1-B sensors. The direct replacement is the SAI100AX90S, matching the ISO 15552 mounting interface, bore, stroke, output force, and porting.
The SAI upgrade introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent from the SI line.
Airtac SI100 Standard Cylinder SI100AX90S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX90S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX90S |
| Bore size | Ø100 mm |
| Stroke | 90 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 SAI100AX90S 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 SAI100AX90S 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 SI100AX90S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×90 | 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 SI100AX90S Is Used
Heavy-Duty Pressing
Drives robust stamping and forming operations requiring up to 3927 N of thrust at 0.5 MPa.
Pallet Diverting
Actuates heavy pallet stops and routing gates on high-capacity packaging conveyors.
Material Lift Stations
Provides reliable vertical lifting of 200 kg loads in automated storage and retrieval systems.
Replacing the Airtac SI100 Standard Cylinder SI100AX90S with the SAI100AX90S
To replace the SI100AX90S, order the SAI100AX90S, confirming the ISO 15552 interface, 100mm bore, 90mm stroke, G1/2 port, and -S magnet for current AirTAC switches. Sizing both ways: a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore yields 6136 N. The plain cylinder does not hold load 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. The 90mm stroke is under 300mm, so rod-bending side loads are minimal, but always guide the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX90S
- ✓ 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 SI100AX90S FAQ
Yes, the SI100AX90S is discontinued. The direct replacement is the SAI100AX90S. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 90mm stroke, force, G1/2 port, and mounting fixtures.
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 of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX90S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX90S replacement — usually within 7-8 hours.