This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80AX210, 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 SI80AX210
The AirTAC SI80 Standard Air Cylinder SI80AX210 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 SAI80AX210, 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 → SAI80AX210
- 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 SI80AX210
The AirTAC SI80AX210 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 210mm stroke. It delivers 2513N push force at 0.5MPa via a G3/8 port. The direct replacement is the SAI80AX210, matching the exact bore, stroke, force, port and ISO 15552 mounting interface.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. This SI80AX210 SKU uses an SUS420J2 stainless rod and lacks a magnet, so it cannot take a CS1-B/DS1-B sensor.
Airtac SI80 Standard Air Cylinder SI80AX210 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80AX210 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80AX210 |
| 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 SAI80AX210 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 SAI80AX210 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 SI80AX210
| 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 SI80AX210 Is Used
Mid-Tonnage Pressing
Ideal for applying 2513N of clamping pressure at 0.5MPa for seating bearings or light assembly presses.
Package Diversion
Provides robust actuation for heavy-duty conveyor sorting gates requiring a 210mm travel distance.
Pallet Lift Stops
Reliable 80mm bore stopping power for material handling lines, safely handling loads up to 1508N.
Replacing the Airtac SI80 Standard Air Cylinder SI80AX210 with the SAI80AX210
To replace the SI80AX210, order the SAI80AX210. Confirm the ISO 15552 mounting interface, the 80mm bore, 210mm stroke, G3/8 port and your specific mounting accessory. Because this SKU lacks a -S magnet, it cannot accept position sensors; order a magnet-equipped SAI if sensing is needed. The SUS420J2 stainless rod provides corrosion resistance. For sizing, an 80mm bore gives 2513N push at 0.5MPa; dropping to a 63mm bore yields 1559N, while a 100mm bore provides 3927N. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for held loads. The 210mm stroke is under the 300mm side-load threshold, but always guide the load to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80AX210
- ✓ 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 SI80AX210 FAQ
Yes, the SI80AX210 is discontinued. The direct replacement is the SAI80AX210. It shares the identical ISO 15552 mounting interface, 80mm bore, 210mm stroke, output force, G3/8 port and accessories, fitting directly into existing fixtures.
The 80mm bore features a G3/8 air port. It delivers 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical max of 513 kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80AX210
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80AX210 replacement — usually within 7-8 hours.