This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX80S, 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 SI80AX80S
The AirTAC SI80 Standard Air Cylinder SI80AX80S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX80S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX80S
- 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 SI80AX80S
The AirTAC SI80AX80S is a discontinued double-acting ISO 15552 profile cylinder featuring an 80 mm bore, an 80 mm stroke, and a SUS420J2 stainless steel piston rod. It delivers a thrust of 2513 N at 0.5 MPa. The direct replacement is the SAI80AX80S, matching the bore, stroke, output force, G3/8 port, and ISO 15552 mounting interface for seamless fixture integration.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. This SI80AX80S includes a magnet for CS1-B/DS1-B sensors, while the SAI family adds SAIL lock, SAIF valve, and BSAI clamp-lock variants.
Airtac SI80 Standard Air Cylinder SI80AX80S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX80S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX80S |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAI80AX80S 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 SAI80AX80S 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 SI80AX80S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SI80AX80S Is Used
Mid-Tonnage Clamping
Secures heavy workpieces in machining fixtures using the 2513 N push force at 0.5 MPa, with the SUS420J2 rod resisting coolant corrosion.
Pallet Diversion
Pushes loaded pallets off a main conveyor line; the 80 mm stroke provides rapid actuation without overextending into the work envelope.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX80S with the SAI80AX80S
To replace the SI80AX80S, order the SAI80AX80S to retain the exact ISO 15552 mounting dimensions, 80 mm stroke, G3/8 port, and M20x1.5 rod thread. Confirm your port thread (PT, G, or NPT) and mounting accessory (LB, FA, TC, etc.). The -A suffix specifies the SUS420J2 stainless rod, and -S denotes the magnet for legacy CS1-B/DS1-B switches. If sizing alternatives, the 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore provides 3927 N. Remember that a plain cylinder drifts without live air; for load holding, use an external pilot check valve or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX80S
- ✓ 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 SI80AX80S FAQ
Yes, the AirTAC SI80AX80S is discontinued. The direct replacement is the SAI80AX80S. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 80 mm stroke, output force, G3/8 port, and mounting interface.
This double-acting cylinder has a G3/8 air port. It generates a push force of 2513 N and a pull force of 2268 N at 0.5 MPa. At 0.7 MPa the push is 3518 N, and at 0.9 MPa it is 4523 N. The theoretical maximum force is 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX80S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX80S replacement — usually within 7-8 hours.