This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX30, 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 SI80AX30
The AirTAC SI80 Standard Air Cylinder SI80AX30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 30mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke30 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX30
- 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 SI80AX30
The AirTAC SI80AX30 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 30mm stroke. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. AirTAC replaced this legacy unit with the SAI80AX30, a direct sharing the exact interface, bore, stroke, force and mounting. The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This specific SKU uses a SUS420J2 stainless rod (A suffix) and lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
The SAI family also adds SAIL, SAIF and BSAI lock/valve variants absent in the SI line. Note that a plain cylinder drifts without live air; the cushion only decelerates. For load holding, use an external rod lock or pilot check valve.
Airtac SI80 Standard Air Cylinder SI80AX30 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX30 |
| Bore size | Ø80 mm |
| Stroke | 30 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 SAI80AX30 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 SAI80AX30 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 SI80AX30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×30 | 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 SI80AX30 Is Used
Short-Stroke Clamping
Ideal for high-force 2513 N clamping jigs on machining lines where the 30mm stroke rapidly secures heavy cast metal blocks.
Press Fit Ejection
Provides robust 80mm bore ejection force to push finished bearings out of tight fixtures, utilizing the SUS420J2 stainless rod.
Heavy Duty Gating
Actuates heavy material flow gates in bulk handling systems, delivering fast 30-800 mm/s cycling with reliable ISO 15552 mounts.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX30 with the SAI80AX30
To replace the SI80AX30, order the SAI80AX30. Verify the ISO 15552 mounting interface, 80mm bore, 30mm stroke, G3/8 port and SUS420J2 stainless rod. Because this SKU lacks the -S magnet, it cannot support position sensing; if switches are needed, select an SAI80X30S and use current AirTAC sensors. Sizing both ways: the 80mm bore yields 2513 N push at 0.5 MPa (4523 N at 0.9 MPa), while a neighbouring 63mm bore provides 1559 N. For load holding on air loss, specify a SAIL or BSAI lock variant, or an external pilot check valve. The 30mm stroke keeps rod bending minimal, but always guide external loads to prevent side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX30
- ✓ 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 SI80AX30 FAQ
Yes, the SI80AX30 is discontinued. The direct replacement is the SAI80AX30. It is dimensionally interchangeable per ISO 15552, retaining the same 80mm bore, 30mm stroke, G3/8 port, force and mounting fixtures.
The 80mm bore uses a G3/8 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 max force of 513 kgf at 1.0 MPa.
Request a Quote for the SAI80AX30
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX30 replacement — usually within 7-8 hours.