This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX15, 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 SI80AX15
The AirTAC SI80 Standard Air Cylinder SI80AX15 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 15mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX15, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke15 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX15
- 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 SI80AX15
The AirTAC SI80AX15 is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, delivering 2513 N push and 2268 N pull at 0.5 MPa. The direct replacement is the SAI80AX15, which retains the exact bore, stroke, G3/8 port, M20x1.5 rod thread and ISO 15552 mounting interface. The SAI upgrade features a revised piston seal using two Y-shaped one-way elements for lower start-up pressure and longer life. This specific SI80AX15 SKU lacks a magnet and therefore cannot accept position sensors.
The -A suffix denotes a SUS420J2 stainless steel piston rod for corrosion resistance. Note that a standard cylinder drifts on air loss; the air cushion only decelerates near stroke end. For load holding, consider an external pilot check valve or the SAIL/BSAI lock variants.
Airtac SI80 Standard Air Cylinder SI80AX15 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX15 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX15 |
| Bore size | Ø80 mm |
| Stroke | 15 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 SAI80AX15 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 SAI80AX15 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 SI80AX15
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×15 | 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 SI80AX15 Is Used
Short-Stroke Clamping
Ideal for holding heavy workpieces in machining fixtures where a compact 15 mm stroke provides rigid clamping at 2513 N force.
Product Diversion
Delivers rapid actuation for diverting heavier goods on packaging lines, utilizing the 30-800 mm/s speed range without exceeding stroke limits.
Press Ejection
Suitable for ejecting dense parts from press beds, benefiting from the SUS420J2 stainless rod resisting minor splashes and wear.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX15 with the SAI80AX15
To replace the discontinued SI80AX15, order the SAI80AX15. Verify your ISO 15552 mounting accessories (LB, FA, TC, etc.) and the G3/8 port size. This SKU has no -S suffix, so it cannot support magnetic switches; if sensing is needed, select an SAI model with the magnet option and use current AirTAC switches. The -A rod is SUS420J2 stainless steel. If downsizing, a 63 mm bore yields 1559 N push at 0.5 MPa; if upsizing, a 100 mm bore yields 3927 N. Because this is a non-locking cylinder, the cushion only decelerates the load—it will drift if air pressure is lost. For secure holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX15
- ✓ 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 SI80AX15 FAQ
Yes, the AirTAC SI80AX15 is discontinued. The direct replacement is the SAI80AX15. It is dimensionally interchangeable per ISO 15552, keeping the same 80 mm bore, 15 mm stroke, G3/8 port, and mounting interface.
The bore is 80 mm with a G3/8 air port. At 0.5 MPa it provides 2513 N push and 2268 N pull. At 0.7 MPa push is 3518 N, and at 0.9 MPa it is 4523 N. The theoretical maximum force is 513 kgf at 1.0 MPa.
Request a Quote for the SAI80AX15
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX15 replacement — usually within 7-8 hours.