This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X800STC, 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 SI80X800STC
The AirTAC SI80 Standard Air Cylinder SI80X800STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X800STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X800STC
- 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 SI80X800STC
The AirTAC SI80X800STC is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 800 mm stroke. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. AirTAC replaced this legacy unit with the SAI80X800STC, a direct replacement sharing the exact ISO 15552 mounting interface, TC trunnion mount, stroke and output force.
The SAI upgrade features a revised piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -S magnet works with CS1-B/DS1-B sensors, while the SAI family adds SAIL, SAIF and BSAI lock variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80X800STC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X800STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X800STC |
| Bore size | Ø80 mm |
| Stroke | 800 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 SAI80X800STC 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 SAI80X800STC 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 SI80X800STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | 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 SI80 Standard Air Cylinder SI80X800STC Is Used
Long-Stroke Diversion
Pushes heavy pallets across wide conveyor lanes over the full 800 mm travel, relying on the 2513 N push force at 0.5 MPa.
Large Assembly Press
Actuates heavy fixture clamps over extended distances, benefiting from the 36 mm adjustable air cushions to decelerate at stroke ends.
Replacing the Airtac SI80 Standard Air Cylinder SI80X800STC with the SAI80X800STC
To replace the SI80X800STC, order the SAI80X800STC. Confirm the ISO 15552 TC trunnion interface, 80 mm bore, 800 mm stroke, G3/8 port, M20x1.5 rod thread and the -S magnet for legacy CS1-B/DS1-B switches. If sizing down, a 63 mm bore yields 1559 N push at 0.5 MPa; sizing up to 100 mm provides 3927 N. Because this is an 800 mm stroke, use an external guide to prevent rod bending and side-load damage. A plain cylinder drifts without live air; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X800STC
- ✓ 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 SI80X800STC FAQ
Yes, the SI80X800STC is discontinued. The direct replacement is the SAI80X800STC. It shares the same ISO 15552 mounting interface, 80 mm bore, 800 mm stroke, G3/8 port and output force, fitting existing fixtures directly.
The 80 mm bore operates at 30-800 mm/s. It generates 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and a theoretical maximum of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X800STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X800STC replacement — usually within 7-8 hours.