Airtac SAU Standard Air Cylinder SAU80X280
The AirTAC Airtac SAU Standard Air Cylinder SAU80X280 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 SAU80X280
The AirTAC SAU80X280 is a double-acting profile-type standard cylinder engineered with an extruded aluminum barrel. It is purposefully shorter and more compact than an ISO 15552 cylinder of the same 80 mm bore, providing a distinct spatial advantage in tight machine layouts. Operating at 0.15-1.0 MPa, it delivers a robust push force of 2513 N and a pull force of 2268 N at 0.5 MPa. The unit features a 25 mm carbon steel rod, M20x1.5 rod-end thread, and a 3/8 inch air port.
For practical sizing, plan for a safe working load of about 1508 N, which accounts for seal friction at 0.5 MPa. In a vertical lift scenario with a 2:1 safety margin, this actuator lifts about 128 kg. The barrel incorporates an adjustable 28 mm air cushion at both ends to decelerate the piston smoothly. Because this specific SKU lacks the -S magnet option, it cannot accept CMSG, DMSG, or EMSG magnetic switches. If your application involves high heat, Viton H seals can upgrade the operating range to 0-150 C.
Airtac SAU Standard Air Cylinder SAU80X280 Technical Specifications
| Model | Airtac SAU Standard Air Cylinder SAU80X280 |
|---|---|
| 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 SAU80X280
| 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 SAU80X280 Is Used
Injection Mold Clamping
Provides 2513 N of push force at 0.5 MPa to secure mid-sized injection mold halves, utilizing the compact profile to fit within tight press boundaries.
Pallet Dispenser Gates
Actuates heavy pneumatic diverter gates on packaging lines, where the 280 mm stroke and robust 25 mm rod handle the high side-loading of moving empty pallets.
Automated Press Ejection
Ejects formed metal components from hydraulic presses, relying on the 28 mm adjustable air cushions to absorb kinetic energy and prevent end-of-stroke impact.
Is the Airtac SAU Standard Air Cylinder SAU80X280 the Right Cylinder?
When sizing this 80 mm bore, compare it against adjacent options. Stepping down to a 63 mm bore reduces the 0.5 MPa push force to 1559 N, while stepping up to a 100 mm bore increases it to 3927 N. This SAU80X280 strikes a balance for medium-heavy loads. Mounting is straightforward using AirTAC SC-series accessories, such as LB foot brackets, FA/FB flanges, or CA/CB clevises, alongside I, Y, F, or U rod knuckles.
Remember that a standard double-acting cylinder does not hold position if air pressure drops or the valve is centered; the load will drift. The integrated air cushion only slows the piston near the end of travel and acts purely as a deceleration device, never as a locking brake. To suspend a load securely, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
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 SAU80X280 FAQ
The SAU80X280 features a 3/8 inch air port and an M20x1.5 rod thread. 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.
It is not an ISO 15552 cylinder and shares its mounting footprint only with the AirTAC SC series, so use LB, FA, FB, CA, or CB SC-series brackets. Additionally, this specific SKU lacks a magnet, meaning it cannot support CMSG, DMSG, or EMSG magnetic switches for position sensing.
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