This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X15S, 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 SI80X15S
The AirTAC SI80 Standard Air Cylinder SI80X15S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 15mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X15S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke15 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X15S
- 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 SI80X15S
The AirTAC SI80X15S is a discontinued double-acting ISO 15552 profile cylinder with a 15 mm stroke. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI80X15S, matching the exact bore, stroke, force, port, and mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family adds SAIL, SAIF, and BSAI variants the SI lacked. The -S magnet works with CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X15S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X15S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X15S |
| Bore size | Ø80 mm |
| Stroke | 15 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 SAI80X15S 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 SAI80X15S 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 SI80X15S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×15 | 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 SI80X15S Is Used
Short-Stroke Clamping
Ideal for high-force 2513 N clamping tasks in machining fixtures where a 15 mm stroke securely holds heavy components.
Transfer Diverters
Provides robust actuation for diverting arms on conveyor lines, utilizing the 80 mm bore for reliable 3518 N force at 0.7 MPa.
Pallet Stops
Acts as a heavy-duty pallet stopper in material handling, delivering immediate stopping force within a compact 15 mm travel.
Replacing the Airtac SI80 Standard Air Cylinder SI80X15S with the SAI80X15S
To replace the SI80X15S, order the SAI80X15S. Verify the ISO 15552 mounting interface, 80 mm bore, 15 mm stroke, G3/8 port, and -S magnet. Neighboring bores: 63 mm offers 1559 N push, while 100 mm offers 3927 N at 0.5 MPa. A plain cylinder drifts on air loss; cushions only decelerate. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. The SAI uses current AirTAC switches, while the legacy SI uses CS1-B/DS1-B.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X15S
- ✓ 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 SI80X15S FAQ
Yes, the SI80X15S is discontinued. The direct replacement is the SAI80X15S. It is dimensionally interchangeable per ISO 15552, matching the 80 mm bore, 15 mm stroke, G3/8 port, and mounting fixtures perfectly.
The G3/8 port feeds a 25 mm rod. Forces are 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and 4523 N push at 0.9 MPa. The theoretical max is 513 kgf at 1.0 MPa.
Request a Quote for the SAI80X15S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X15S replacement — usually within 7-8 hours.