This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X950, 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 SI80X950
The AirTAC SI80 Standard Air Cylinder SI80X950 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 950mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X950, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke950 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X950
- 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 SI80X950
The AirTAC SI80X950 is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 950 mm stroke. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. Because this legacy unit lacks the -S suffix, it has no magnet and cannot accept a CS1-B or DS1-B sensor.
You should order the direct replacement SAI80X950, which shares the exact ISO 15552 mounting interface, bore, stroke, output force, and port size. The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
Airtac SI80 Standard Air Cylinder SI80X950 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X950 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X950 |
| Bore size | Ø80 mm |
| Stroke | 950 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 SAI80X950 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 SAI80X950 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 SI80X950
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×950 | 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 SI80X950 Is Used
Long-Stroke Diversion
Pushes heavy pallets across transfer lines using the 950 mm reach, relying on external guides to prevent rod bending during the extended travel.
Material Lowering
Lowers 120 kg workpieces with controlled descent, requiring a pilot check valve because the standard cushion only decelerates at end-of-stroke.
Press Ejection
Ejects formed parts from machinery using 2513 N push force at 0.5 MPa, sized safely at a 1508 N working load for reliable cycling.
Replacing the Airtac SI80 Standard Air Cylinder SI80X950 with the SAI80X950
To replace this SI80X950 with the SAI80X950, verify your ISO 15552 mounting fixtures (LB, FA, CA, TC), the 80 mm bore, 950 mm stroke, and G3/8 port. If you need position feedback, select an SAI80X950S because this no-S legacy SKU cannot host a sensor. For neighboring sizes, a 63 mm bore yields 1559 N push at 0.5 MPa, while a 100 mm bore yields 3927 N. Note that a plain cylinder does not hold load on air loss; the cushion only decelerates. For secure holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant. Finally, at 950 mm, prevent rod bending by guiding the load externally to avoid side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X950
- ✓ 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 SI80X950 FAQ
Yes, the SI80X950 is discontinued. The direct replacement is the SAI80X950. It shares the same ISO 15552 mounting interface, 80 mm bore, 950 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The 80 mm bore uses a G3/8 port. It generates 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a theoretical max of 513 kgf at 1.0 MPa. The rod is 25 mm with an M20x1.5 thread.
Request a Quote for the SAI80X950
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X950 replacement — usually within 7-8 hours.