Airtac SAU Standard Air Cylinder SAU80X520S
The AirTAC Airtac SAU Standard Air Cylinder SAU80X520S is a genuine double-acting profile-type standard air cylinder with a Ø80mm bore and 520mm 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
- Stroke520 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 28 mm
About the Airtac SAU Standard Air Cylinder SAU80X520S
The AirTAC SAU80X520S is a double-acting profile-type cylinder featuring a 520 mm stroke and a 3/8 inch port. Its extruded aluminum barrel makes it shorter and more compact than an ISO 15552 cylinder of the same bore, delivering a robust 2513 N of push force at 0.5 MPa.
Because seal friction and smooth travel reduce actual output, plan for a safe working load of roughly 1508 N at 0.5 MPa. For vertical lifting, this translates to lifting about 128 kg with a 2:1 safety margin. The included -S piston magnet allows direct mounting of CMSG, DMSG, or EMSG switches in the profile groove, and a Viton H seal option raises the operating ceiling to 150 C.
Airtac SAU Standard Air Cylinder SAU80X520S Technical Specifications
| Model | Airtac SAU Standard Air Cylinder SAU80X520S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø80 mm |
| Stroke | 520 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 SAU80X520S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×520 | 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 SAU80X520S Is Used
Pallet Diversion
Pushes heavy timber pallets onto a secondary packaging line using its 2513 N thrust capacity and 520 mm reach.
Vertical Lift Gate
Raises a 120 kg mezzanine safety gate, relying on the 2:1 safety margin within the 80 mm bore force class.
Injection Mold Ejection
Actuates a long-stroke ejection carriage on a plastic molding press, utilizing the 3/8 inch port for rapid exhaust.
Is the Airtac SAU Standard Air Cylinder SAU80X520S the Right Cylinder?
When sizing this unit, the adjacent bore down is the 63 mm variant (1559 N push at 0.5 MPa), while the next size up is the 100 mm bore (3927 N push at 0.5 MPa). Choose the 80 mm bore when your load sits squarely between those two thrust classes. The 520 mm stroke demands attention: at this extension length, you must support the load with an external guide to prevent rod bending and premature seal wear from side loads.
This SKU includes the -S magnet for sensing, and you can attach it using AirTAC SC-series mounting hardware like LB foot brackets or CA clevises. Note that the adjustable air cushion only decelerates the piston near the stroke ends; it will not hold a load if air pressure drops. For position holding on air loss, 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 SAU80X520S FAQ
At 0.5 MPa it provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa the push force is 3518 N, and at 0.9 MPa it is 4523 N. The theoretical maximum force is 513 kgf at 1.0 MPa.
You cannot use ISO 15552 brackets, as the SAU profile is more compact and not dimensionally interchangeable. You must use AirTAC SC-series accessories like FA flanges. However, the -S magnet on this model allows you to fit CMSG, DMSG, or EMSG sensors directly into the barrel groove.
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