This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X150SN, 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 SI80X150SN
The AirTAC SI80 Standard Air Cylinder SI80X150SN 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 SAI80X150SN, 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 → SAI80X150SN
- 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 SI80X150SN
The AirTAC SI80X150SN is a discontinued double-acting ISO 15552 profile cylinder featuring an extruded aluminum barrel, a 150 mm stroke, and a G3/8 air port. Delivering 2513 N of push force at 0.5 MPa, it is replaced by the SAI80X150SN. This direct successor matches the exact bore, output, and ISO 15552 mounting interface of the legacy unit.
The SAI80X150SN features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The -N suffix denotes NBR seals (-20 to +70 C), while the -S indicates a piston magnet for CS1-B/DS1-B switches. For load holding, note that a standard cylinder drifts on air loss; use an external rod lock or the SAIL/BSAI variants.
Airtac SI80 Standard Air Cylinder SI80X150SN Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X150SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X150SN |
| 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 SAI80X150SN 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 SAI80X150SN 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 SI80X150SN
| 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 SI80X150SN Is Used
Press Fit Assembly
Applies 2513 N of push force at 0.5 MPa to seat bearings and pins in automated machining lines, utilizing the 150 mm stroke for deep reach.
Pallet Diverting
Actuates heavy diverters on packaging conveyors, with the 80 mm bore providing enough thrust to redirect loaded pallets smoothly.
Replacing the Airtac SI80 Standard Air Cylinder SI80X150SN with the SAI80X150SN
To replace the SI80X150SN, order the SAI80X150SN, verifying the ISO 15552 mounting interface, 80 mm bore, 150 mm stroke, G3/8 port, and mounting accessories. The direct fit means no fixture changes. If sizing down, a 63 mm bore yields 1559 N push at 0.5 MPa; if sizing up, a 100 mm bore provides 3927 N. A plain cylinder does not hold loads without live air—the cushion only decelerates. For secure holding, specify the SAIL air-released lock or BSAI clamp-lock, or add a pilot check valve. The SAIF variant integrates a 4M valve if needed.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X150SN
- ✓ 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 SI80X150SN FAQ
Yes, the AirTAC SI80X150SN is discontinued. The direct replacement is the SAI80X150SN. It shares the identical ISO 15552 mounting interface, 80 mm bore, 150 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The 80 mm bore features a G3/8 air port and a 25 mm rod. At 0.5 MPa it provides 2513 N push and 2268 N pull force. At 0.7 MPa push is 3518 N, and at 0.9 MPa it is 4523 N. The theoretical maximum force is 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X150SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X150SN replacement — usually within 7-8 hours.