This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X1050STC, 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 SI80 Standard Air Cylinder SI80X1050STC
The AirTAC SI80 Standard Air Cylinder SI80X1050STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 1050mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X1050STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke1050 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X1050STC
- 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 SI80 Standard Air Cylinder SI80X1050STC
The AirTAC SI80X1050STC is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore, 1050mm stroke, and TC trunnion mount. It delivers 2513N push and 2268N pull at 0.5MPa via a G3/8 port. As a nonstandard stroke exceeding the 1500mm standard limit, it requires careful alignment. AirTAC replaced this unit with the SAI80X1050STC, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, output force, and porting.
The SAI replacement introduces an upgraded piston seal featuring two Y-shaped one-way elements for low start-up pressure and extended life. For applications needing load holding on air loss, the SAI family adds SAIL and BSAI lock variants the SI lacked. This -S model includes a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X1050STC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X1050STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X1050STC |
| Bore size | Ø80 mm |
| Stroke | 1050 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 SAI80X1050STC carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAI80X1050STC produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI80 Standard Air Cylinder SI80X1050STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×1050 | 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 SI80 Standard Air Cylinder SI80X1050STC Is Used
Long-Stroke Material Transfer
Drives large pallets or heavy fixtures across 1050mm gaps between conveyor sections using the 2513N push force at 0.5MPa.
High-Bay Push-Out Station
Actuates discharge arms in storage retrieval systems, requiring the TC trunnion mount to pivot safely under dynamic loads.
Replacing the Airtac SI80 Standard Air Cylinder SI80X1050STC with the SAI80X1050STC
To replace the SI80X1050STC, order the SAI80X1050STC. Confirm the ISO 15552 TC trunnion mounting interface, 80mm bore, 1050mm stroke, G3/8 port (PT/G/NPT thread options), and the -S magnet for current AirTAC switches. If sizing down, the 63mm bore yields 1559N push at 0.5MPa; if sizing up, the 100mm bore yields 3927N. Note that 1050mm is a nonstandard stroke. At this length, prevent rod bending and premature seal wear by using external guides to absorb side loads. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X1050STC
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI80 Standard Air Cylinder SI80X1050STC FAQ
Yes, the SI80X1050STC is discontinued. The direct replacement is the SAI80X1050STC. It shares the identical ISO 15552 mounting interface, 80mm bore, 1050mm stroke, output force, G3/8 port, and TC mount, fitting existing fixtures directly.
The 80mm bore uses a G3/8 port and features a 25mm rod with an M20x1.5 thread. It delivers 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical max of 513kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X1050STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X1050STC replacement — usually within 7-8 hours.