This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX15S, 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 SI80AX15S
The AirTAC SI80 Standard Air Cylinder SI80AX15S 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 SAI80AX15S, 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 → SAI80AX15S
- 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 SI80AX15S
The AirTAC SI80AX15S is a discontinued double-acting ISO 15552 profile cylinder with a 15 mm stroke and an SUS420J2 stainless steel piston rod. Delivering 2513 N of push force at 0.5 MPa through a G3/8 port, it is replaced by the SAI80AX15S. This direct successor matches the exact bore, stroke, force, port and ISO 15552 mounting interface.
The SAI upgrade features a redesigned piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. The original -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family introduces SAIL lock, SAIF valve, and BSAI clamp-lock variants.
Airtac SI80 Standard Air Cylinder SI80AX15S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX15S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX15S |
| 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 SAI80AX15S 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 SAI80AX15S 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 SI80AX15S
| 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 SI80AX15S Is Used
Short-Stroke Clamping
Ideal for securely holding stainless steel workpieces during machining operations, utilizing the 2513 N push force and corrosion-resistant SUS420J2 rod.
Compact Pressing
Performs localized pressing and seating of bearings or pins in tight spaces where a 15 mm stroke and 80 mm bore force profile are required.
Ejector Mechanisms
Drives rapid part ejection on automated lines, benefiting from the 30-800 mm/s speed range and integrated CS1-B/DS1-B position sensing.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX15S with the SAI80AX15S
To replace the SI80AX15S, order the SAI80AX15S. Verify your ISO 15552 mounting interface, G3/8 port, M20x1.5 rod thread, and the -S magnet requirement. The SUS420J2 rod (-A) is retained for corrosion resistance. If you need more force, the 100 mm bore offers 3927 N push at 0.5 MPa; if less is acceptable, the 63 mm bore provides 1559 N. Note that a standard cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding. Because the 15 mm stroke is very short, side-load risks are minimal, but ensure rigid alignment.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX15S
- ✓ 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 SI80AX15S FAQ
Yes, the SI80AX15S is discontinued. The direct replacement is the SAI80AX15S. It shares the same ISO 15552 mounting interface, 80 mm bore, 15 mm stroke, G3/8 port, and output force, fitting directly into existing fixtures.
It features a G3/8 air port and an M20x1.5 rod thread. 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 maximum of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX15S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX15S replacement — usually within 7-8 hours.