This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX5S, 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 SI80AX5S
The AirTAC SI80 Standard Air Cylinder SI80AX5S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 5mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX5S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke5 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX5S
- 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 SI80AX5S
The AirTAC SI80AX5S is a discontinued double-acting ISO 15552 profile cylinder featuring a SUS420J2 stainless steel rod and a 5 mm stroke. Delivering 2513 N push force at 0.5 MPa through a G3/8 port, it is replaced by the SAI80AX5S. This direct upgrade matches the exact ISO 15552 mounting interface, bore, stroke, force and port size.
The SAI successor introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The original -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI80 Standard Air Cylinder SI80AX5S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX5S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX5S |
| Bore size | Ø80 mm |
| Stroke | 5 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 SAI80AX5S 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 SAI80AX5S 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 SI80AX5S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×5 | 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 SI80AX5S Is Used
Short-Stroke Clamping
Ideal for holding heavy workpieces in machining fixtures where a brief 5 mm travel and 2513 N force secure the part without obstructing the work zone.
Ejector Pins
Provides a rapid, compact ejection stroke on automated assembly lines, using the 30-800 mm/s speed range to clear finished components efficiently.
Washdown Actuation
The SUS420J2 stainless rod option suits light washdown or corrosive manufacturing environments requiring reliable short-stroke positioning.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX5S with the SAI80AX5S
To replace the SI80AX5S, order the SAI80AX5S. Verify the ISO 15552 mounting interface, 80 mm bore, 5 mm stroke, G3/8 port, and the -S magnet for position sensing. The -A rod material specifies SUS420J2 stainless steel; ensure you select this corrosion-resistant option if your environment requires it, rather than the default carbon steel. Sizing downward from 80 mm, a 63 mm bore yields 1559 N push at 0.5 MPa; sizing upward, a 100 mm bore provides 3927 N. For such a short 5 mm stroke, side-load and rod-bending risks are minimal, but ensure strict alignment to prevent binding. A plain cylinder does not hold load on air loss; the cushion only decelerates. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX5S
- ✓ 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 SI80AX5S FAQ
Yes, the AirTAC SI80AX5S is discontinued. The direct replacement is the SAI80AX5S. It features the same ISO 15552 mounting interface, 80 mm bore, 5 mm stroke, G3/8 port, and output force, fitting existing fixtures perfectly while upgrading the piston seal.
This double-acting cylinder uses a G3/8 air port. It generates 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 force of 513 kgf at 1.0 MPa.
Request a Quote for the SAI80AX5S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX5S replacement — usually within 7-8 hours.