This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X212S, 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 SI80X212S
The AirTAC SI80 Standard Air Cylinder SI80X212S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 212mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X212S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke212 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X212S
- 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 SI80X212S
The AirTAC SI80X212S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, adjustable air cushions at both ends, and a built-in piston magnet. Delivering 2513 N push and 2268 N pull at 0.5 MPa, it features a 25 mm rod, M20x1.5 thread, and a G3/8 port. AirTAC replaced this legacy unit with the SAI80X212S, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, and port size.
The SAI80X212S features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also introduces SAIL, SAIF, and BSAI lock and valve variants absent in the SI line. Your existing CS1-B/DS1-B sensors fit the SI80X212S, while the SAI accepts current AirTAC switches.
Airtac SI80 Standard Air Cylinder SI80X212S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X212S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X212S |
| Bore size | Ø80 mm |
| Stroke | 212 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 SAI80X212S 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 SAI80X212S 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 SI80X212S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×212 | 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 SI80X212S Is Used
Clamp Actuation
Provides 2513 N of push force at 0.5 MPa, ideal for securing heavy steel billets during machining operations.
Package Diverting
Uses the 212 mm stroke to push heavy pallets off a main conveyor line into a secondary sorting lane.
Pallet Stopping
Acts as a robust end-stop on roller conveyors, absorbing kinetic energy via its adjustable 36 mm air cushions.
Replacing the Airtac SI80 Standard Air Cylinder SI80X212S with the SAI80X212S
To replace the discontinued SI80X212S, order the SAI80X212S. It is a dimensional direct per ISO 15552: verify your G3/8 port, M20x1.5 rod thread, and mounting accessory (LB, FA, CA, TC). Because the 212 mm stroke is nonstandard (exceeding standard increments), expect a special build. For sizing, neighboring bores offer alternatives: a 63 mm bore yields 1559 N push, while a 100 mm bore provides 3927 N at 0.5 MPa. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so for load holding, specify the SAIL or BSAI lock variant, or use an external rod lock. Stroke is under 300 mm, so rod bending is minimal, but always guide the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X212S
- ✓ 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 SI80X212S FAQ
Yes, the SI80X212S is discontinued. The direct replacement is the SAI80X212S. It shares the identical ISO 15552 mounting interface, 80 mm bore, 212 mm stroke, G3/8 port, and output force, fitting existing fixtures perfectly.
The 80 mm 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 maximum of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X212S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X212S replacement — usually within 7-8 hours.