This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X90S, 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 SI100X90S
The AirTAC SI100 Standard Cylinder SI100X90S 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 SAI100X90S, 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 → SAI100X90S
- 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 SI100X90S
The AirTAC SI100X90S 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. AirTAC replaced it with the SAI100X90S, a direct upgrade sharing the same ISO 15552 mounting interface, G1/2 port, and M20x1.5 rod thread.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. The -S suffix means it has a piston magnet for CS1-B/DS1-B sensors; SAI uses current switches.
Airtac SI100 Standard Cylinder SI100X90S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X90S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X90S |
| 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 SAI100X90S 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 SAI100X90S 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 SI100X90S
| 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 SI100X90S Is Used
Heavy Pressing
Drives robust clamping and pressing actuators requiring 3927 N of thrust at 0.5 MPa.
Pallet Handling
Indexes heavy loaded pallets over a 90mm stroke using the G1/2 pneumatic supply.
Replacing the Airtac SI100 Standard Cylinder SI100X90S with the SAI100X90S
To replace the SI100X90S, order the SAI100X90S. Verify the ISO 15552 mounting interface, 90mm stroke, G1/2 port (PT/G/NPT), and the -S magnet for sensors. At 0.5 MPa it yields 3927 N push and 3681 N pull; neighbouring bores are 80mm (2513 N) and 125mm (6136 N). For load holding, note a plain cylinder drifts on air loss as cushions only decelerate; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAIF variant integrates a 4M valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X90S
- ✓ 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 SI100X90S FAQ
Yes, the SI100X90S is discontinued. The direct replacement is the SAI100X90S, which maintains the identical ISO 15552 mounting interface, 100mm bore, 90mm stroke, and G1/2 port.
It has a G1/2 port. Force ratings are 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 SAI100X90S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X90S replacement — usually within 7-8 hours.