This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X750STC, 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 SI80X750STC
The AirTAC SI80 Standard Air Cylinder SI80X750STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 750mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X750STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke750 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X750STC
- 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 SI80X750STC
The AirTAC SI80X750STC is a discontinued double-acting ISO 15552 profile cylinder with a 750 mm stroke and TC trunnion mount. Delivering 2513 N push at 0.5 MPa via a G3/8 port, it is replaced by the SAI80X750STC. This direct successor shares the exact ISO 15552 mounting interface, M20x1.5 rod thread, and force class.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The -S magnet works with CS1-B/DS1-B sensors. For high heat, Viton H seals raise limits to 150 C; for load holding, use the SAIL or BSAI lock variants.
Airtac SI80 Standard Air Cylinder SI80X750STC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X750STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X750STC |
| Bore size | Ø80 mm |
| Stroke | 750 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 SAI80X750STC 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 SAI80X750STC 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 SI80X750STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×750 | 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 SI80X750STC Is Used
Long-Stroke Diversion
Pushes heavy pallets across 750 mm transfer lines using the TC trunnion mount to accommodate structural flex.
Vertical Material Lift
Raises 128 kg loads in two-to-one margin vertical lift applications, relying on the 2513 N thrust at 0.5 MPa.
Large Press Ejection
Ejects formed parts from machinery, utilizing the 36 mm adjustable air cushions to decelerate at stroke end.
Replacing the Airtac SI80 Standard Air Cylinder SI80X750STC with the SAI80X750STC
To replace the SI80X750STC, order the SAI80X750STC. Verify the ISO 15552 TC trunnion interface, 80 mm bore, 750 mm stroke, G3/8 port, and -S magnet. Neighbouring bores are 63 mm (1559 N [email protected]) and 100 mm (3927 N). At 750 mm stroke, use an external guide to prevent rod bending and side loads. The cushion only decelerates; it does not hold load. For dead-load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X750STC
- ✓ 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 SI80X750STC FAQ
Yes, the SI80X750STC is discontinued. The direct replacement is the SAI80X750STC, which shares the identical ISO 15552 mounting interface, 80 mm bore, 750 mm stroke, G3/8 port, and output force.
The G3/8 port bore provides 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a max force of 513 kgf at 1.0 MPa. The piston rod is 25 mm with an M20x1.5 thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X750STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X750STC replacement — usually within 7-8 hours.