Airtac SAU Standard Air Cylinder SAU80X20
The AirTAC Airtac SAU Standard Air Cylinder SAU80X20 is a genuine double-acting profile-type standard air cylinder with a Ø80mm bore and 20mm 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
- Stroke20 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 28 mm
About the Airtac SAU Standard Air Cylinder SAU80X20
The AirTAC SAU80X20 is a double-acting profile-type cylinder with a 20 mm stroke, engineered to be physically shorter than an ISO 15552 cylinder of the same 80 mm bore. This compact extruded aluminum barrel saves valuable machine space while delivering a robust 2513 N push force at 0.5 MPa. It features a 3/8 inch port, an M20x1.5 rod thread, and a 28 mm adjustable air cushion at both ends to smooth out stroke transitions.
Because this specific SKU lacks the -S magnet suffix, it cannot accept CMSG, DMSG, or EMSG magnetic switches for position sensing. For practical sizing, plan for a safe working load of roughly 1508 N, which accounts for seal friction and smooth travel at 0.5 MPa. In vertical lifting scenarios, this translates to safely hoisting about 128 kg with a 2:1 safety margin. For high-temperature environments up to 150 C, specify the Viton H seal option.
Airtac SAU Standard Air Cylinder SAU80X20 Technical Specifications
| Model | Airtac SAU Standard Air Cylinder SAU80X20 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø80 mm |
| Stroke | 20 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 SAU80X20
| SAU | Profile-type standard cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×20 | 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 SAU80X20 Is Used
Stamping Press Ejection
Provides 2513 N of push at 0.5 MPa to eject heavy stamped metal panels from a press die within a very tight 20 mm clearance window.
Heavy Pallet Stopper
Acts as a compact physical barrier to halt 100 kg loaded pallets on a packaging conveyor, using its robust 25 mm diameter rod to absorb impact.
Forklift Carriage Lock
Secures and releases auxiliary forklift attachments in material handling fleets, fitting neatly into the machine's constrained structural geometry.
Is the Airtac SAU Standard Air Cylinder SAU80X20 the Right Cylinder?
When sizing this 80 mm bore, compare it against its neighbors: stepping down to a 63 mm bore yields 1559 N push at 0.5 MPa, while stepping up to a 100 mm bore provides 3927 N. This SAU80X20 fits perfectly when you need 2513 N of push force in a very short 20 mm stroke envelope. Note that a 20 mm stroke is a non-standard, made-to-order length for this series.
This cylinder shares its mounting footprint with AirTAC SC-series accessories, including LB foot, FA/FB flange, and CA/CB clevis brackets. Remember that the standard adjustable air cushion only decelerates the piston near the end of travel; it does not function as a brake. If your application must hold a load vertically during air loss or valve centering, you must add an external rod lock or a pilot-operated check valve to prevent drift.
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 SAU80X20 FAQ
The 80 mm bore generates a push force of 2513 N and a pull force of 2268 N at 0.5 MPa. 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. The air port size is 3/8 inch.
No, the SAU is not an ISO 15552 cylinder; it is a compact profile type that is shorter than ISO equivalents. You must use AirTAC SC-series mounting accessories like LB, FA, or CA brackets. Additionally, this SAU80X20 SKU lacks a magnet, so it cannot support CMSG, DMSG, or EMSG magnetic sensors.
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