Airtac SAU Standard Air Cylinder SAU80X40
The AirTAC Airtac SAU Standard Air Cylinder SAU80X40 is a genuine double-acting profile-type standard air cylinder with a Ø80mm bore and 40mm 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
- Stroke40 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 28 mm
About the Airtac SAU Standard Air Cylinder SAU80X40
The AirTAC SAU80X40 is a double-acting profile-type cylinder featuring an extruded aluminum barrel. It is engineered to be noticeably shorter than an ISO 15552 cylinder of the same 80 mm bore, offering a distinct spatial advantage in cramped machinery layouts. It delivers a robust push force of 2513 N and a pull force of 2268 N at 0.5 MPa, operating via a 3/8" port and a 25 mm rod with an M20x1.5 thread.
For practical sizing, plan for a safe working load of roughly 1508 N at 0.5 MPa, accounting for seal friction and smooth travel. This translates to lifting about 128 kg vertically with a 2:1 safety margin, helping you match the cylinder to real part weights. The unit uses adjustable air cushions at both ends to decelerate the piston near stroke end, and since this SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG magnetic switches.
Airtac SAU Standard Air Cylinder SAU80X40 Technical Specifications
| Model | Airtac SAU Standard Air Cylinder SAU80X40 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø80 mm |
| Stroke | 40 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 SAU80X40
| SAU | Profile-type standard cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×40 | 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 SAU80X40 Is Used
Injection Mold Clamping
Provides 2513 N of push force at 0.5 MPa to secure mid-sized injection mold halves, utilizing the 40 mm stroke for rapid, repetitive clamping cycles.
Heavy Package Diverting
Deploys a short 40 mm stroke to push heavy cartons or totes off a main conveyor line, handling the lateral force without requiring a massive footprint.
Pallet Stopper Gate
Acts as a robust physical stop for incoming pallets on roller conveyors, absorbing impact through its adjustable end cushions while saving axial space.
Is the Airtac SAU Standard Air Cylinder SAU80X40 the Right Cylinder?
When sizing this 80 mm bore, compare it against its neighbors: a 63 mm bore yields 1559 N of push force at 0.5 MPa, while stepping up to a 100 mm bore provides 3927 N. Choose the 80 mm when you need substantial thrust that exceeds the 63 mm capacity but want to avoid the larger footprint of the 100 mm unit. Mounting is straightforward using AirTAC SC-series accessories, such as LB foot brackets, FA/FB flanges, or CA/CB clevises.
Keep in mind that a standard SAU cylinder does not hold its position if air pressure is lost or the valve is centered; the piston will drift. The integrated air cushion slows the piston at the end of travel but acts purely as a decelerator, never as a locking brake. To suspend a load safely in place, you must 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 SAU80X40 FAQ
The SAU80X40 features a 3/8" port and a 25 mm piston rod. It generates a push force of 2513 N and a pull force of 2268 N at 0.5 MPa, a push force of 3518 N at 0.7 MPa, and a theoretical maximum force of 513 kgf at 1.0 MPa.
No, it is not an ISO 15552 cylinder, but it shares the exact same mounting accessory dimensions as the AirTAC SC series. You can use SC-series LB foot, FA/FB flange, and CA/CB clevis brackets. Additionally, this specific SKU lacks a magnet, so it cannot support magnetic position sensors.
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