This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X1350S, 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 SI80X1350S
The AirTAC SI80 Standard Air Cylinder SI80X1350S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 1350mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X1350S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke1350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X1350S
- 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 SI80X1350S
The AirTAC SI80X1350S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel. It delivers 2513 N push force at 0.5 MPa through an 80 mm bore and 1350 mm stroke. The direct replacement is the SAI80X1350S, which matches the original G3/8 port, M20x1.5 rod thread, and ISO 15552 mounting interface.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Rod material options include carbon steel, SUS420J2, or SUS304, and the -S suffix means this unit has a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X1350S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X1350S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X1350S |
| Bore size | Ø80 mm |
| Stroke | 1350 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 SAI80X1350S 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 SAI80X1350S 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 SI80X1350S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×1350 | 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 SI80X1350S Is Used
Long-Stroke Diversion
Pushes heavy pallets across 1350 mm transfer lines using the 2513 N force, guided externally to prevent rod bending.
Large Fixture Actuation
Clamps oversized workholding fixtures on machining centers, using the adjustable 36 mm air cushions to decelerate.
Replacing the Airtac SI80 Standard Air Cylinder SI80X1350S with the SAI80X1350S
To replace the SI80X1350S, order the SAI80X1350S. Confirm the ISO 15552 mounting accessory (LB, FA, CA, TC), the G3/8 port thread (PT/G/NPT), and the -S magnet. For sizing both ways: an 80 mm bore yields 2513 N push at 0.5 MPa, while a 100 mm bore yields 3927 N. If you need less force, a 63 mm bore provides 1559 N. Because the 1350 mm stroke is long, use an external guide to prevent rod bending and side-load damage. A plain cylinder does not hold load on air loss; for load holding, use the SAIL lock, BSAI clamp-lock variant, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X1350S
- ✓ 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 SI80X1350S FAQ
Yes, the SI80X1350S is discontinued. The direct replacement is the SAI80X1350S. It is dimensionally interchangeable per ISO 15552, keeping the same 80 mm bore, 1350 mm stroke, output force, G3/8 port, and mounting interface.
The 80 mm bore uses a G3/8 port. Force ratings are: 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 max of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X1350S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X1350S replacement — usually within 7-8 hours.