This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X900STC, 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 SI100X900STC
The AirTAC Airtac SI100 Standard Cylinder SI100X900STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 900mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X900STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X900STC
- 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 SI100X900STC
The AirTAC SI100X900STC is a discontinued double-acting ISO 15552 profile cylinder with a 900mm stroke and TC trunnion mount. Delivering 3927N push force at 0.5MPa via a G1/2 port, it is replaced by the SAI100X900STC. This direct successor shares the exact bore, stroke, force, and mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The -S magnet supports CS1-B/DS1-B switches, while SAIL or BSAI variants add lock options the SI lacked.
Airtac SI100 Standard Cylinder SI100X900STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X900STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X900STC |
| Bore size | Ø100 mm |
| Stroke | 900 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 SAI100X900STC 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 SAI100X900STC 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 SI100X900STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×900 | 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 SI100X900STC Is Used
Heavy Material Transfer
Drives large pallets or heavy fixtures over 900mm distances where 3927N of push force at 0.5MPa is required to overcome inertia.
Automated Warehousing
Acts as a main lift or pusher axis in storage retrieval systems, utilizing the TC trunnion mount for pivoting load alignment.
Large Assembly Press
Provides the 200kg vertical lift capacity to position heavy components or actuate large clamping fixtures on assembly lines.
Replacing the Airtac SI100 Standard Cylinder SI100X900STC with the SAI100X900STC
To replace the SI100X900STC, order the SAI100X900STC. Confirm the TC trunnion mounting, G1/2 port, M20x1.5 rod thread, and -S magnet for CS1-B/DS1-B sensors. If downsizing, the 80mm bore yields 2513N push at 0.5MPa; if upsizing, the 125mm bore provides 6136N. A plain cylinder drifts on air loss—the cushion only decelerates—so use a pilot check valve or SAIL lock for holding. At 900mm stroke, use external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X900STC
- ✓ 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 SI100X900STC FAQ
Yes, the SI100X900STC is discontinued. The direct replacement is the SAI100X900STC. It shares the identical ISO 15552 mounting interface, 100mm bore, 900mm stroke, G1/2 port, and output force, fitting existing fixtures perfectly.
It features a G1/2 port. Force output 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 SAI100X900STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X900STC replacement — usually within 7-8 hours.