This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X275, 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 SI80X275
The AirTAC SI80 Standard Air Cylinder SI80X275 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 275mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X275, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke275 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X275
- 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 SI80X275
The AirTAC SI80X275 is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 275 mm stroke. It delivers 2513 N push and 2268 N pull at 0.5 MPa, using a G3/8 port. The direct replacement is the SAI80X275, retaining the exact interface, force, and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. This no-magnet SKU cannot take a sensor.
Airtac SI80 Standard Air Cylinder SI80X275 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X275 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X275 |
| Bore size | Ø80 mm |
| Stroke | 275 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 SAI80X275 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 SAI80X275 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 SI80X275
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×275 | 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 SI80X275 Is Used
Press Ejection
Provides robust 2513 N push at 0.5 MPa to eject formed metal parts from heavy stamping dies.
Pallet Diversion
Handles 275 mm stroke to push heavy goods pallets smoothly onto secondary packaging lines.
Replacing the Airtac SI80 Standard Air Cylinder SI80X275 with the SAI80X275
To replace the SI80X275, order the SAI80X275, matching the ISO 15552 interface, 80 mm bore, 275 mm stroke, and G3/8 port. Confirm your mounting (LB, FA, TC) and thread (PT/G/NPT). This SKU lacks the -S magnet, so it cannot accept CS1-B/DS1-B sensors; order SAI80X275S if sensing is needed. For sizing, a 63 mm bore gives 1559 N [email protected], while a 100 mm bore gives 3927 N. The cushion only decelerates; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. At 275 mm stroke, use a guide to prevent rod bending from side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X275
- ✓ 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 SI80X275 FAQ
Yes, the SI80X275 is discontinued. The direct replacement is the SAI80X275, which maintains the same ISO 15552 mounting interface, 80 mm bore, 275 mm stroke, output force, and G3/8 port.
The 80 mm bore uses a G3/8 port. Force output is 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.
Request a Quote for the SAI80X275
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X275 replacement — usually within 7-8 hours.