This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X950S, 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 SI80X950S
The AirTAC SI80 Standard Air Cylinder SI80X950S 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 SAI80X950S, 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 → SAI80X950S
- 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 SI80X950S
The AirTAC SI80X950S is a discontinued double-acting ISO 15552 profile cylinder with a 950 mm stroke. Generating 2513 N push force at 0.5 MPa, it features a G3/8 port, M20x1.5 rod thread, and a piston magnet for CS1-B/DS1-B sensors. The direct replacement is the SAI80X950S, which shares the exact ISO 15552 mounting interface, bore, and output force.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. The SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the legacy SI line.
Airtac SI80 Standard Air Cylinder SI80X950S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X950S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X950S |
| 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 SAI80X950S 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 SAI80X950S 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 SI80X950S
| 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 SI80X950S Is Used
Long-Stroke Diversion
Pushes heavy pallets across wide transfer lines using the 950 mm stroke and 2513 N force at 0.5 MPa.
Vertical Material Lift
Raises 128 kg loads to overhead buffers, relying on external guides to prevent rod bending over 950 mm.
Large Press Ejection
Cycles finished parts out of heavy machinery, benefiting from the 36 mm adjustable cushions at both ends.
Replacing the Airtac SI80 Standard Air Cylinder SI80X950S with the SAI80X950S
To replace the SI80X950S, order the SAI80X950S. Verify your existing fixture's ISO 15552 mounting interface, the G3/8 air port, and the M20x1.5 rod thread. The -S suffix means a magnet is present for legacy CS1-B/DS1-B sensors; the SAI replacement uses current AirTAC switches. If you need to downsize, a 63 mm bore yields 1559 N push at 0.5 MPa; if upsizing, a 100 mm bore provides 3927 N. Because this is a 950 mm stroke, use an external guide to prevent rod bending and side-load damage. A plain cylinder drifts on air loss—the cushion only decelerates—so use the SAIL or BSAI lock variant for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X950S
- ✓ 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 SI80X950S FAQ
Yes, the SI80X950S is discontinued. The direct replacement is the SAI80X950S. It shares the same ISO 15552 mounting interface, 80 mm bore, 950 mm stroke, G3/8 port, and output force, fitting existing fixtures perfectly.
The G3/8 port bore delivers 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 maximum theoretical force of 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X950S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X950S replacement — usually within 7-8 hours.