This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X320H, 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 SI80X320H
The AirTAC SI80 Standard Air Cylinder SI80X320H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 320mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X320H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke320 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X320H
- 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 SI80X320H
The AirTAC SI80X320H is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore, 320mm stroke, and Viton H high-temperature seals (0 to 150 C). It delivers 2513 N push and 2268 N pull at 0.5 MPa, utilizing a G3/8 port and a 25mm piston rod. Because this SKU lacks a magnet, it cannot accept position sensors.
You must replace it with the direct replacement SAI80X320H, which shares the exact ISO 15552 mounting interface, force, and porting. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
Airtac SI80 Standard Air Cylinder SI80X320H Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X320H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X320H |
| Bore size | Ø80 mm |
| Stroke | 320 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 SAI80X320H 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 SAI80X320H 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 SI80X320H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×320 | 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 SI80X320H Is Used
High-Temperature Ejection
Utilizing Viton H seals for 0-150 C environments, this 3518 N thrust cylinder ejects molded parts from hot zones without seal degradation.
Long-Stroke Diversion
The 320mm stroke provides ample travel to divert large pallets on a packaging line, requiring external guides to prevent rod bending.
Replacing the Airtac SI80 Standard Air Cylinder SI80X320H with the SAI80X320H
To replace the SI80X320H, order the SAI80X320H, confirming the ISO 15552 mounting interface, 80mm bore, 320mm stroke, G3/8 port, and Viton H seal. This non-magnetic SKU cannot take a sensor, unlike the CS1-B/DS1-B switches used on -S models. Sizing both ways: a 63mm bore yields 1559 N push at 0.5 MPa, while a 100mm bore yields 3927 N. Note that a 320mm stroke invites rod bending; use external guides to prevent side loads. The air cushion only decelerates the piston and does not hold load on air loss—for secure holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X320H
- ✓ 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 SI80X320H FAQ
Yes, the SI80X320H is discontinued. The direct replacement is the SAI80X320H. It shares the identical ISO 15552 mounting interface, 80mm bore, 320mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
This double-acting cylinder uses a G3/8 port. It delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N at 0.9 MPa, and a theoretical max of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X320H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X320H replacement — usually within 7-8 hours.