This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX30S, 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 SI80AX30S
The AirTAC SI80 Standard Air Cylinder SI80AX30S 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 SAI80AX30S, 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 → SAI80AX30S
- 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 SI80AX30S
The AirTAC SI80AX30S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel and adjustable air cushions at both ends. It delivers 2513 N push force at 0.5 MPa through an 80 mm bore, a Ø25 mm rod, and a G3/8 port. The direct replacement is the SAI80AX30S, which preserves the exact ISO 15552 mounting interface, stroke, output force, and porting for immediate fixture compatibility.
This specific unit features the -A SUS420J2 stainless piston rod for corrosion resistance and the -S magnet for legacy CS1-B/DS1-B switches (the SAI replacement uses current AirTAC switches). The SAI upgrade introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
Airtac SI80 Standard Air Cylinder SI80AX30S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX30S |
| 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 SAI80AX30S 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 SAI80AX30S 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 SI80AX30S
| 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 SI80AX30S Is Used
Short-Stroke Clamping
Ideal for holding heavy workpieces during machining, utilizing the 2513 N push force over a precise 30 mm travel distance.
Product Diversion
Quickly pushes items across a belt line with a fast 30 mm stroke, taking advantage of the 30-800 mm/s speed range.
Pallet Stopper
Acts as a robust pneumatic stop for heavy pallets, with the SUS420J2 stainless rod resisting harsh environments.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX30S with the SAI80AX30S
To replace this SI80AX30S, order the SAI80AX30S. Confirm the ISO 15552 mounting interface, 80 mm bore, 30 mm stroke, G3/8 port (PT/G/NPT thread options), and your mounting accessory. The -S magnet and -A SUS420J2 stainless rod must be specified on the new order. Sizing both ways: step down to a 63 mm bore for 1559 N push at 0.5 MPa, or up to 100 mm for 3927 N. A plain cylinder drifts on air loss as the cushion only decelerates; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAIF variant adds a built-in valve for bores up to 100 mm.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX30S
- ✓ 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 SI80AX30S FAQ
Yes, the SI80AX30S is discontinued. The direct replacement is the SAI80AX30S. It is dimensionally interchangeable per ISO 15552, matching the 80 mm bore, 30 mm stroke, G3/8 port, and mounting interface.
It has a G3/8 port. Force ratings are 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 of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX30S replacement — usually within 7-8 hours.