This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X140S, 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 SI80X140S
The AirTAC SI80 Standard Air Cylinder SI80X140S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 140mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X140S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke140 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X140S
- 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 SI80X140S
The AirTAC SI80X140S is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 140mm stroke. Delivering 2513N push and 2268N pull at 0.5MPa via a G3/8 port, it is replaced by the SAI80X140S. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, force, port and accessories, fitting existing fixtures perfectly.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also adds SAIL, SAIF and BSAI lock variants. Your -S suffix means a piston magnet for CS1-B/DS1-B sensors; the SAI uses current AirTAC switches.
Airtac SI80 Standard Air Cylinder SI80X140S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X140S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X140S |
| Bore size | Ø80 mm |
| Stroke | 140 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 SAI80X140S 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 SAI80X140S 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 SI80X140S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×140 | 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 SI80X140S Is Used
Press Fit Tooling
Drives 80mm bore fixtures for pressing bearings or pins, utilizing 2513N push force at 0.5MPa to seat components reliably.
Replacing the Airtac SI80 Standard Air Cylinder SI80X140S with the SAI80X140S
To replace the SI80X140S, order SAI80X140S. Confirm the ISO 15552 mounting interface, 80mm bore, 140mm stroke, G3/8 port (PT/G/NPT thread options), M20x1.5 rod thread, and your specific mounting accessory (LB, FA, TC, etc.). The -S suffix indicates a magnet for legacy CS1-B/DS1-B switches; the SAI replacement uses current AirTAC switches. For sizing, the 80mm bore yields 2513N push at 0.5MPa; neighbouring 63mm yields 1559N and 100mm yields 3927N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. This 140mm stroke is under 300mm, so rod-bending side-load risks are minimal, but always guide the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X140S
- ✓ 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 SI80X140S FAQ
Yes, the SI80X140S is discontinued. The direct replacement is the SAI80X140S. It is dimensionally interchangeable per ISO 15552, retaining the same 80mm bore, 140mm stroke, 2513N force, G3/8 port and mounting interface.
The 80mm bore uses a G3/8 port. Force output is 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical maximum of 513kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X140S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X140S replacement — usually within 7-8 hours.