This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X353SN, 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 SI80X353SN
The AirTAC SI80 Standard Air Cylinder SI80X353SN 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 SAI80X353SN, 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 → SAI80X353SN
- 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 SI80X353SN
The AirTAC SI80X353SN is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 353 mm stroke. Delivering 2513 N push force at 0.5 MPa through a G3/8 port, it is replaced direct by the SAI80X353SN. The SAI shares the exact mounting interface, M20x1.5 rod thread, and 36 mm cushions. The NBR seal supports -20 to +70 C, with a Viton H option for high heat.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. The original SI magnet works with CS1-B/DS1-B sensors, while the SAI family adds SAIL lock, SAIF valve, and BSAI clamp variants absent in the SI line.
Airtac SI80 Standard Air Cylinder SI80X353SN Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X353SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X353SN |
| 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 SAI80X353SN 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 SAI80X353SN 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 SI80X353SN
| 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 SI80X353SN Is Used
Pallet Diversion
Pushes heavy pallets onto secondary packaging lines using the 2513 N push force at 0.5 MPa, with the 353 mm stroke clearing adjacent conveyors.
Press Ejection
Ejects formed metal components from hydraulic presses, utilizing the adjustable 36 mm air cushions to decelerate the rod smoothly at stroke ends.
Replacing the Airtac SI80 Standard Air Cylinder SI80X353SN with the SAI80X353SN
To replace the SI80X353SN, order the SAI80X353SN. Verify the ISO 15552 mounting accessory (LB, FA, TC, etc.), the G3/8 port, and the magnet. Because the 353 mm stroke increases rod-bending risk, use an external guide to prevent side loads. If sizing up or down, note the 63 mm bore yields 1559 N [email protected], while the 100 mm bore yields 3927 N. A plain cylinder drifts on air loss; for load holding, use the SAIL or BSAI lock variant, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X353SN
- ✓ 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 SI80X353SN FAQ
Yes, the SI80X353SN is discontinued. The direct replacement is the SAI80X353SN. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 353 mm stroke, G3/8 port, and mounting interface.
The 80 mm bore uses a G3/8 port. 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 max force of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X353SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X353SN replacement — usually within 7-8 hours.