This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X300CA, 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 SI80X300CA
The AirTAC SI80 Standard Air Cylinder SI80X300CA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 300mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X300CA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X300CA
- 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 SI80X300CA
The AirTAC SI80X300CA is a discontinued double-acting ISO 15552 profile cylinder with a 300 mm stroke and CA clevis mount. Delivering 2513 N push at 0.5 MPa through a G3/8 port, it is replaced by the SAI80X300CA. This direct upgrade shares the exact bore, stroke, force, port and mounting interface, fitting existing fixtures seamlessly.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. As this SKU lacks the -S magnet, it cannot accept CS1-B/DS1-B sensors. The SAI family also adds SAIL, SAIF and BSAI lock variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80X300CA Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X300CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X300CA |
| Bore size | Ø80 mm |
| Stroke | 300 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 SAI80X300CA 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 SAI80X300CA 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 SI80X300CA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SI80X300CA Is Used
Press Ejection
Provides robust 2513 N push at 0.5 MPa to eject formed metal parts from heavy stamping dies.
Pallet Diversion
Actuates large lane diverters or heavy-duty pushers on assembly line conveyors using the CA clevis.
Material Lift Gates
Raises and lowers safety gates or heavy material handling chutes with a 128 kg vertical lift capacity.
Replacing the Airtac SI80 Standard Air Cylinder SI80X300CA with the SAI80X300CA
To replace the SI80X300CA, order the SAI80X300CA. Verify the ISO 15552 CA clevis mount, 80 mm bore, 300 mm stroke, G3/8 port (PT/G/NPT thread options) and M20x1.5 rod thread. Since this SKU lacks the -S magnet, it cannot support position sensing; order the -S variant if switches are needed. For sizing, neighbouring bores (63 mm or 100 mm) offer 1559 N or 3927 N push at 0.5 MPa. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding. At 300 mm, prevent rod bending by guiding the load externally.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X300CA
- ✓ 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 SI80X300CA FAQ
Yes, the SI80X300CA is discontinued. The direct replacement is the SAI80X300CA. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 300 mm stroke, CA mount, G3/8 port and output force.
At 0.5 MPa it pushes 2513 N and pulls 2268 N. At 0.7 MPa push is 3518 N, and at 0.9 MPa it is 4523 N. The theoretical max is 513 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa, speed is 30-800 mm/s, and the G3/8 port and M20x1.5 rod are fixed by the bore.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X300CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X300CA replacement — usually within 7-8 hours.