This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX210S, 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 SI80AX210S
The AirTAC SI80 Standard Air Cylinder SI80AX210S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 210mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80AX210S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke210 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80AX210S
- 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 SI80AX210S
The AirTAC SI80AX210S is a discontinued double-acting ISO 15552 profile cylinder featuring an 80mm bore, 210mm stroke, and a SUS420J2 stainless piston rod. Delivering 2513 N push force at 0.5 MPa via a G3/8 port, it is replaced by the SAI80AX210S. This direct upgrade shares identical ISO 15552 mounting dimensions, bore, stroke, force, and port size.
The SAI replacement upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure and long life. It also introduces SAIL, SAIF, and BSAI lock variants the SI lacked. With the -S magnet, legacy CS1-B/DS1-B switches fit (SAI uses current AirTAC switches).
Airtac SI80 Standard Air Cylinder SI80AX210S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX210S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX210S |
| Bore size | Ø80 mm |
| Stroke | 210 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 SAI80AX210S 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 SAI80AX210S 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 SI80AX210S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×210 | 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 SI80AX210S Is Used
Heavy-Duty Pressing
Drives robust clamping and pressing actuators requiring substantial force, utilizing the 2513 N push capacity at 0.5 MPa.
Pallet Diversion
Pushes heavy pallets off high-throughput conveyor lines, relying on the 80mm bore and 210mm stroke for deep reach.
Material Lift Gates
Actuates large industrial lift gates and heavy doors, where the SUS420J2 stainless rod provides corrosion resistance.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX210S with the SAI80AX210S
To replace the SI80AX210S, order the SAI80AX210S. Confirm the ISO 15552 mounting interface, 80mm bore, 210mm stroke, G3/8 port (PT/G/NPT thread options), and mounting accessory. The -S magnet and -A SUS420J2 rod are retained. Neighbouring bores: a 63mm bore yields 1559 N push at 0.5 MPa, while a 100mm bore yields 3927 N. For this 210mm stroke, ensure guide alignment to prevent rod bending. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX210S
- ✓ 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 SI80AX210S FAQ
Yes, the SI80AX210S is discontinued. The direct replacement is the SAI80AX210S. It shares the same ISO 15552 mounting interface, 80mm bore, 210mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The G3/8 port feeds a 25mm rod. Forces are: push 2513 N and pull 2268 N at 0.5 MPa; push 3518 N at 0.7 MPa; push 4523 N at 0.9 MPa; max force 513 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX210S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX210S replacement — usually within 7-8 hours.