This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X800STC, 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 SI100X800STC
The AirTAC Airtac SI100 Standard Cylinder SI100X800STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 800mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X800STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X800STC
- 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 SI100X800STC
The AirTAC SI100X800STC is a discontinued double-acting ISO 15552 profile cylinder with an 800 mm stroke and TC trunnion mount. Delivering 3927 N push force at 0.5 MPa, it is replaced by the SAI100X800STC. This direct successor matches the 100 mm bore, G1/2 port, M20x1.5 rod thread and 36 mm cushions.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF and BSAI variants absent from the SI line. The -S magnet supports CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X800STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X800STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X800STC |
| Bore size | Ø100 mm |
| Stroke | 800 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 SAI100X800STC 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 SAI100X800STC 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 SI100X800STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×800 | 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 SI100X800STC Is Used
Long-Stroke Material Transfer
Pushes heavy pallets or workpieces across an 800 mm gap in automated assembly lines using its 3927 N thrust at 0.5 MPa.
Large Fixture Actuation
Indexes heavy machining fixtures or clamping arms over a long distance, relying on the TC trunnion to absorb angular alignment shifts.
Replacing the Airtac SI100 Standard Cylinder SI100X800STC with the SAI100X800STC
To replace the SI100X800STC, order the SAI100X800STC. Confirm the ISO 15552 TC trunnion interface, 100 mm bore, 800 mm stroke, G1/2 port (PT/G/NPT thread options) and the -S magnet. If you need less force, a 80 mm bore yields 2513 N [email protected]; for more power, a 125 mm bore provides 6136 N. Note that a plain cylinder drifts without live air—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant. Because 800 mm exceeds 300 mm, add external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X800STC
- ✓ 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 SI100X800STC FAQ
Yes, the SI100X800STC is discontinued. The direct replacement is the SAI100X800STC. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 800 mm stroke, G1/2 port, TC mount and output force, so it fits existing fixtures perfectly.
It operates at 0.15-1.0 MPa with a G1/2 port, M20x1.5 rod thread, 36 mm cushions and 30-800 mm/s speed. 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 max of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X800STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X800STC replacement — usually within 7-8 hours.