This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X300SN, 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 SI80X300SN
The AirTAC SI80 Standard Air Cylinder SI80X300SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 300mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X300SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X300SN
- 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 SI80X300SN
The AirTAC SI80X300SN is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore, 300mm stroke, and G3/8 port. Delivering 2513N push force at 0.5MPa, it is replaced by the SAI80X300SN direct. This upgrade shares identical ISO 15552 mounting dimensions, bore, stroke, and port, fitting existing fixtures perfectly.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The NBR seal handles -20 to +70C, while the -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X300SN Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X300SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X300SN |
| Bore size | Ø80 mm |
| Stroke | 300 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 SAI80X300SN 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 SAI80X300SN 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 SI80X300SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SI80X300SN Is Used
Press Fit Assembly
Applies steady 2513N thrust at 0.5MPa to seat bearings and bushings into housings without damaging delicate machined surfaces.
Pallet Diversion
Extends 300mm to push heavy product pallets off a main packaging line onto a secondary quality control routing track.
Replacing the Airtac SI80 Standard Air Cylinder SI80X300SN with the SAI80X300SN
To replace the SI80X300SN, order the SAI80X300SN direct, confirming the ISO 15552 interface, 80mm bore, 300mm stroke, G3/8 port, and mounting accessory. Size both ways: a 63mm bore yields 1559N push at 0.5MPa, while a 100mm bore yields 3927N. The cushion only decelerates; it does not hold load on air loss, so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for holding. At 300mm stroke, prevent rod bending by using an external guide to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X300SN
- ✓ 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 SI80X300SN FAQ
Yes, the SI80X300SN is discontinued. The direct replacement is the SAI80X300SN. It shares the same ISO 15552 mounting interface, 80mm bore, 300mm stroke, output force, and G3/8 port, so it drops directly into existing fixtures.
The 80mm bore uses a G3/8 port. At 0.5MPa it provides 2513N push and 2268N pull force. At 0.7MPa push is 3518N, and at 0.9MPa it is 4523N. The theoretical maximum force is 513kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X300SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X300SN replacement — usually within 7-8 hours.