This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X353S, 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 SI80X353S
The AirTAC SI80 Standard Air Cylinder SI80X353S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 353mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X353S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke353 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X353S
- 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 SI80X353S
The AirTAC SI80X353S is a discontinued double-acting ISO 15552 profile cylinder with a 353 mm stroke and an extruded aluminum barrel. Delivering 2513 N push force at 0.5 MPa through a G3/8 port, it is replaced by the SAI80X353S. This direct successor matches the exact bore, stroke, force, port and ISO 15552 mounting interface, fitting existing fixtures perfectly.
The SAI upgrade features a revised piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. It also introduces SAIL, SAIF and BSAI lock variants absent from the SI line.
Airtac SI80 Standard Air Cylinder SI80X353S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X353S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X353S |
| Bore size | Ø80 mm |
| Stroke | 353 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 SAI80X353S 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 SAI80X353S 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 SI80X353S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×353 | 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 SI80X353S Is Used
Pallet Diversion
Routes heavy pallets on a packaging line using the 2513 N push force at 0.5 MPa to reliably actuate diverter arms without mechanical hesitation.
Press Feed Lowering
Lowers material platforms in a press feed setup where the 353 mm stroke accommodates deep material stacks, requiring external guides to prevent rod bending.
Replacing the Airtac SI80 Standard Air Cylinder SI80X353S with the SAI80X353S
To replace the SI80X353S, order the SAI80X353S. Confirm the ISO 15552 mounting interface, 80 mm bore, 353 mm stroke, G3/8 port (PT/G/NPT thread options) and mounting accessory. The -S suffix means it has a piston magnet for legacy CS1-B/DS1-B sensors; the SAI uses current AirTAC switches. If sizing down, a 63 mm bore yields 1559 N push at 0.5 MPa; sizing up to 100 mm gives 3927 N. Because stroke is 353 mm, use an external guide to prevent rod bending and 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 variant for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X353S
- ✓ 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 SI80X353S FAQ
Yes, the AirTAC SI80X353S is discontinued. The direct replacement is the SAI80X353S. It is dimensionally interchangeable per ISO 15552, matching the 80 mm bore, 353 mm stroke, output force, G3/8 port and mounting interface, so it drops directly into existing fixtures.
This double-acting cylinder has a G3/8 air port and an M20x1.5 rod thread. Force ratings are: 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 max of 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X353S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X353S replacement — usually within 7-8 hours.