Airtac SAU Standard Air Cylinder SAU80X280S
The AirTAC Airtac SAU Standard Air Cylinder SAU80X280S is a genuine double-acting profile-type standard air cylinder with a Ø80mm bore and 280mm stroke, 3/8" air ports and adjustable end cushioning. Its hard-anodized aluminum-profile barrel is shorter than an ISO 15552 cylinder of the same bore, and it shares SC-series mounting accessories.
- BoreØ80 mm
- Stroke280 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 28 mm
About the Airtac SAU Standard Air Cylinder SAU80X280S
The AirTAC SAU80X280S is a double-acting profile-type cylinder engineered with a 280 mm stroke and an extruded aluminum barrel. Because it is shorter than an ISO 15552 cylinder of the same 80 mm bore, it provides a distinct space advantage in tight machine layouts. It delivers a robust 2513 N of push force and 2268 N of pull force at 0.5 MPa, operating via a 3/8" port and a 25 mm piston rod with an M20x1.5 thread.
For practical sizing, plan for a safe working load of roughly 1508 N at 0.5 MPa to account for seal friction and smooth travel. This equates to lifting about 128 kg vertically with a 2:1 safety margin. The -S suffix means a piston magnet is built in, allowing you to mount CMSG, DMSG, or EMSG sensors directly into the profile groove for position detection. If your environment exceeds 70 C, you can specify the Viton H high-temperature seal option to handle up to 150 C.
Airtac SAU Standard Air Cylinder SAU80X280S Technical Specifications
| Model | Airtac SAU Standard Air Cylinder SAU80X280S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø80 mm |
| Stroke | 280 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| 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, 28 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAU series datasheet. Confirm against the product label before installation. Thread options: PT (blank) / G (BSPP). A high-temperature seal (0-150 °C) is available.
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 | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAU Standard Air Cylinder SAU80X280S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×280 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAU-family variants: SAUD (double rod), SAUJ (adjustable stroke), SAUF (with built-in solenoid valve), and SAU-S with built-in magnet. Seals: TPU (blank) / Viton H / NBR N. Sensor switches: CMSG / DMSG / EMSG.
Where the Airtac SAU Standard Air Cylinder SAU80X280S Is Used
Injection Mold Platen Ejection
Provides the 2513 N push force required to eject heavy plastic parts from molding platens, utilizing its compact profile to fit within confined press bases.
Heavy Package Diversion
Actuates large sorting arms on freight conveyor lines, where the 280 mm stroke and built-in magnet enable precise positioning of heavy parcels.
Pallet Stopper Gates
Controls heavy pallet flow on roller conveyors by raising and lowering stop gates, benefiting from the robust 25 mm rod and adjustable end cushions.
Is the Airtac SAU Standard Air Cylinder SAU80X280S the Right Cylinder?
When sizing this unit, compare it to its neighbors: the 63 mm bore yields 1559 N of push force at 0.5 MPa, while the 100 mm bore provides 3927 N. Choose the 80 mm bore when your application requires moderate force between these two tiers. Mounting is straightforward using AirTAC SC-series accessories, including LB foot mounts, FA/FB flanges, CA/CB clevises, or I/Y/F/U rod knuckles. At a 280 mm stroke, the extended rod is susceptible to bending; ensure your load is guided externally to prevent side-load damage to the cylinder. Note that this cylinder does not hold its position if air pressure drops or the valve is centered—the piston will drift. The adjustable 28 mm air cushions only decelerate the piston near the end of stroke; for secure load holding, install an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB — same as SC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAU Standard Air Cylinder SAU80X280S FAQ
This 80 mm bore cylinder features a 3/8" port and delivers 2513 N push / 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and a theoretical maximum of 513 kgf at 1.0 MPa.
The SAU80X280S is shorter than a standard ISO 15552 cylinder of the same bore, saving space without losing strength. The -S suffix indicates an integrated piston magnet, allowing CMSG, DMSG, or EMSG switches to be fitted into the barrel groove for position sensing.
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