This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X800, 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 SI80X800
The AirTAC SI80 Standard Air Cylinder SI80X800 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X800, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X800
- 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 SI80X800
The AirTAC SI80X800 is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 800mm stroke. Delivering 2513 N push force at 0.5 MPa, it features a 25mm rod, M20x1.5 thread, G3/8 port and 36mm adjustable air cushions. The direct replacement is the SAI80X800, which matches the exact ISO 15552 mounting interface, bore, stroke, output force and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks the -S magnet, so it cannot accept CS1-B/DS1-B sensors. The SAI family also adds SAIL, SAIF and BSAI lock variants absent from the SI line.
Airtac SI80 Standard Air Cylinder SI80X800 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X800 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X800 |
| Bore size | Ø80 mm |
| Stroke | 800 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 SAI80X800 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 SAI80X800 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 SI80X800
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×800 | 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 SI80X800 Is Used
Long-Stroke Material Transfer
Pushes heavy pallets or workpieces across an 800mm gap with 2513 N of force at 0.5 MPa, requiring external guides to prevent rod bending over the long travel distance.
Large Fixture Actuation
Indexes heavy machining fixtures through the full 800mm stroke, utilizing the 36mm adjustable air cushions at both ends to decelerate the 25mm carbon steel rod smoothly.
Replacing the Airtac SI80 Standard Air Cylinder SI80X800 with the SAI80X800
To replace the SI80X800, order the SAI80X800. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the G3/8 port thread (PT/G/NPT) and the 800mm stroke. Because this non-magnetic SKU lacks a sensor groove piston ring, you cannot mount CS1-B/DS1-B switches; if sensing is needed, specify an SAI80X800S. If sizing up or down, neighboring bores are 63mm (2182 N push @0.7 MPa) and 100mm (5497 N push @0.7 MPa). A plain cylinder drifts on air loss—the 36mm cushions only decelerate—so for load holding use an external pilot check valve, rod lock, or the SAIL/BSAI lock variant. At 800mm stroke, prevent rod bending by guiding the load externally to avoid side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X800
- ✓ 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 SI80X800 FAQ
Yes, the SI80X800 is discontinued. The direct replacement is the AirTAC SAI80X800. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 80mm bore, 800mm stroke, 2513 N push force at 0.5 MPa, G3/8 port and mounting accessories.
The 80mm 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 theoretical max of 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s. It uses a G3/8 port, a 25mm rod with M20x1.5 thread, and 36mm adjustable cushions.
Request a Quote for the SAI80X800
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X800 replacement — usually within 7-8 hours.