This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X75N, 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 SI80X75N
The AirTAC SI80 Standard Air Cylinder SI80X75N is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 75mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X75N, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X75N
- 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 SI80X75N
The AirTAC SI80X75N is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 75 mm stroke. It delivers 2513 N push force at 0.5 MPa through a G3/8 port. The direct replacement is the SAI80X75N, matching the exact interface, bore, stroke, force and mounting. The SAI upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. This -N SKU uses NBR seals (-20 to +70 C) and lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
The SAI family also introduces SAIL, SAIF and BSAI lock/valve variants absent in the legacy SI line.
Airtac SI80 Standard Air Cylinder SI80X75N Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X75N |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X75N |
| Bore size | Ø80 mm |
| Stroke | 75 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 SAI80X75N 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 SAI80X75N 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 SI80X75N
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×75 | 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 SI80X75N Is Used
Package Diverting
Drives diverter arms on sorting lines, using the 75 mm stroke to push parcels efficiently without excessive overtravel.
Pallet Stopping
Acts as a robust pneumatic stop for heavy pallets, providing 2513 N of holding push at 0.5 MPa to halt inbound goods.
Clamp Actuation
Secures heavy workpieces in machining fixtures, applying reliable clamping force via the 25 mm piston rod.
Replacing the Airtac SI80 Standard Air Cylinder SI80X75N with the SAI80X75N
To replace the SI80X75N, order the SAI80X75N. Verify the ISO 15552 mounting interface, 80 mm bore, 75 mm stroke, M20x1.5 rod thread and G3/8 port. Because this SKU lacks a magnet (-S), it cannot support position sensing; if sensing is needed, select an SAI80X75S. If you need to size up or down, adjacent bores are 63 mm (1559 N push @0.5 MPa) and 100 mm (3927 N push @0.5 MPa). A plain cylinder drifts on air loss—the 36 mm adjustable cushion only decelerates the stroke end. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X75N
- ✓ 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 SI80X75N FAQ
Yes, the AirTAC SI80X75N is discontinued. The direct replacement is the SAI80X75N. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 75 mm stroke, output force, G3/8 port and mounting accessories.
The bore is 80 mm with 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, 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.
Request a Quote for the SAI80X75N
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X75N replacement — usually within 7-8 hours.