This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X75, 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 SI80X75
The AirTAC SI80 Standard Air Cylinder SI80X75 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 SAI80X75, 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 → SAI80X75
- 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 SI80X75
The AirTAC SI80X75 is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 75 mm stroke. Generating 2513 N push force at 0.5 MPa, it features a Ø25 mm rod, M20x1.5 thread, G3/8 port and 36 mm adjustable cushions. The direct is the SAI80X75, retaining identical dimensions and output.
The SAI upgrade uses two Y-shaped one-way piston seals for low start-up pressure and long life. This non-magnet SKU cannot take a sensor. For high heat, Viton H seals allow 0-150 C; for load holding, use the SAIL or BSAI lock variants.
Airtac SI80 Standard Air Cylinder SI80X75 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X75 |
| 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 SAI80X75 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 SAI80X75 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 SI80X75
| 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 SI80X75 Is Used
Package Diverting
Drives diverting arms on packaging conveyors, using the 2513 N thrust to push heavy cartons onto adjacent routing lanes at speed.
Pallet Stop Gate
Acts as a robust pneumatic stop gate for roller conveyors, holding back loaded pallets safely within its 1508 N working load limit.
Clamp Actuation
Provides reliable clamping force for medium-weight machining fixtures, ensuring parts are held securely during light milling or drilling.
Replacing the Airtac SI80 Standard Air Cylinder SI80X75 with the SAI80X75
To replace the SI80X75, order the SAI80X75. Verify the ISO 15552 mounting fixture (LB, FA, TC, etc.), the G3/8 port, and the M20x1.5 rod thread. Because this specific SKU lacks the -S magnet, it cannot accept CS1-B/DS1-B sensors; order a magnet-equipped SAI80X75S if position detection is needed. Sizing both ways: the neighbouring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, specify the SAIL air-released lock, the BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X75
- ✓ 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 SI80X75 FAQ
Yes, the AirTAC SI80X75 is discontinued. The direct replacement is the SAI80X75. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 75 mm stroke, output force, G3/8 port, and mounting accessories. You simply install the SAI model into your existing fixtures.
The bore is 80 mm with a G3/8 air port. The force ratings are: 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 maximum of 513 kgf at 1.0 MPa. The operating speed is 30-800 mm/s.
Request a Quote for the SAI80X75
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X75 replacement — usually within 7-8 hours.