This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X150S, 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 SI80X150S
The AirTAC SI80 Standard Air Cylinder SI80X150S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X150S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X150S
- 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 SI80X150S
The AirTAC SI80X150S is a discontinued double-acting ISO 15552 profile cylinder featuring a 80mm bore, 150mm stroke, G3/8 port, and a magnetic piston for CS1-B/DS1-B sensors. Delivering 2513N push force at 0.5MPa, it is replaced by the SAI80X150S. This direct upgrade retains the exact ISO 15552 mounting interface, bore, and output force for seamless fixture integration.
The SAI upgrade features a modernized 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 variants unavailable in the SI line.
Airtac SI80 Standard Air Cylinder SI80X150S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X150S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X150S |
| Bore size | Ø80 mm |
| Stroke | 150 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 SAI80X150S 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 SAI80X150S 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 SI80X150S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×150 | 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 SI80X150S Is Used
Mid-Tonnage Clamping
Secures heavy workpieces in machining fixtures using 2513N of thrust at 0.5MPa.
Pallet Diversion
Actuates heavy lane guides and diverter arms to route loaded pallets at high speed.
Material Lift Gates
Raises and lowers safety gates on loading docks, comfortably handling 128kg vertical loads.
Replacing the Airtac SI80 Standard Air Cylinder SI80X150S with the SAI80X150S
To replace the SI80X150S, order the SAI80X150S. Confirm the ISO 15552 mounting accessory (LB, FA, TC, etc.), the G3/8 port thread (PT/G/NPT), and the -S magnet requirement for current AirTAC switches. Sizing both ways: a neighbouring 63mm bore yields 1559N push at 0.5MPa, while a 100mm bore yields 3927N. Note that a plain SAI does not hold load on air loss; the cushion only decelerates. For load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X150S
- ✓ 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 SI80X150S FAQ
Yes, the SI80X150S is discontinued. The direct replacement is the SAI80X150S, which shares the identical ISO 15552 mounting interface, 80mm bore, 150mm stroke, G3/8 port, and output force.
It uses a G3/8 air port. Theoretical forces are: 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a maximum force of 513kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X150S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X150S replacement — usually within 7-8 hours.