This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X150SFB, 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 SI80X150SFB
The AirTAC SI80 Standard Air Cylinder SI80X150SFB 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 SAI80X150SFB, 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 → SAI80X150SFB
- 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 SI80X150SFB
The AirTAC SI80X150SFB is a discontinued double-acting ISO 15552 profile cylinder with an FB flange mounting interface. Built with an extruded aluminum barrel and a 150 mm stroke, it delivers 2513 N push force at 0.5 MPa through a G3/8 port. AirTAC replaced this legacy unit with the SAI80X150SFB, a direct upgrade retaining the exact bore, stroke, force, port, and mounting dimensions.
The SAI replacement features an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also introduces lock and valve variants the SI lacked, such as SAIL and BSAI clamp-lock cylinders.
Airtac SI80 Standard Air Cylinder SI80X150SFB Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X150SFB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X150SFB |
| 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 SAI80X150SFB 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 SAI80X150SFB 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 SI80X150SFB
| 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 SI80X150SFB Is Used
Press Fit Assembly
Drives medium-tonnage bushings and bearings into housings using steady 2513 N thrust at 0.5 MPa.
Pallet Diversion
Actuates heavy-duty lane deflector gates via the FB flange mount to reroute loaded pallets.
Replacing the Airtac SI80 Standard Air Cylinder SI80X150SFB with the SAI80X150SFB
To replace the SI80X150SFB, order the SAI80X150SFB. Confirm the ISO 15552 mounting interface, the 80 mm bore, the 150 mm stroke, the G3/8 port, and the FB flange accessory. Because this SKU includes the -S magnet, it supports CS1-B/DS1-B legacy sensors (the SAI uses current AirTAC switches). If sizing up or down, note the 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. Rod material options include carbon steel, SUS420J2, and SUS304.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X150SFB
- ✓ 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 SI80X150SFB FAQ
Yes, the SI80X150SFB is discontinued. The direct replacement is the SAI80X150SFB. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 150 mm stroke, G3/8 port, FB flange mount, and output force.
This double-acting cylinder uses a G3/8 air port. It provides 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and 4523 N push at 0.9 MPa. The theoretical maximum force is 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X150SFB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X150SFB replacement — usually within 7-8 hours.