This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X280CA, 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 SI80X280CA
The AirTAC Airtac SI80 Standard Air Cylinder SI80X280CA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 280mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X280CA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke280 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X280CA
- 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 SI80X280CA
The AirTAC SI80X280CA is a discontinued double-acting ISO 15552 profile cylinder with a 280 mm stroke and CA clevis mounting. Delivering 2513 N push force at 0.5 MPa through its G3/8 port, it is replaced by the SAI80X280CA. This direct successor shares the exact bore, stroke, force, port and ISO 15552 mounting dimensions, fitting existing fixtures perfectly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this non-magnet SKU cannot take a sensor; legacy CS1-B/DS1-B switches required the -S option. The SAI family also adds SAIL, SAIF and BSAI lock variants.
Airtac SI80 Standard Air Cylinder SI80X280CA Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X280CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X280CA |
| Bore size | Ø80 mm |
| Stroke | 280 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 SAI80X280CA 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 SAI80X280CA 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 SI80X280CA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×280 | 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 SI80X280CA Is Used
Press Clamping
Secures heavy steel blanks in milling fixtures, utilising the 2513 N push force to prevent workpiece shift during aggressive machining.
Pallet Diversion
Actuates a 280 mm stroke routing gate to redirect heavy pallets onto secondary packaging lines without requiring external guides.
Material Ejection
Pushes completed assemblies out of jigs using the 2268 N pull force, clearing the station for the next automated cycle.
Replacing the Airtac SI80 Standard Air Cylinder SI80X280CA with the SAI80X280CA
To replace the SI80X280CA, order the SAI80X280CA. Verify the ISO 15552 CA clevis interface, 80 mm bore, 280 mm stroke and G3/8 port. Because this SKU lacks the -S magnet, it cannot accept position sensors; order the SAI80X80S if sensing is needed. Sizing both ways: a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore yields 3927 N. For this 280 mm stroke, guide external rods to prevent side-load bending. A plain cylinder drifts on air loss; for load holding use the SAIL lock, BSAI clamp-lock, an external rod lock or a pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X280CA
- ✓ 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 SI80X280CA FAQ
Yes, the SI80X280CA is discontinued. The direct replacement is the SAI80X280CA, which shares the same ISO 15552 CA clevis mounting interface, 80 mm bore, 280 mm stroke, G3/8 port and output force.
This double-acting cylinder 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, and a theoretical maximum of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X280CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X280CA replacement — usually within 7-8 hours.