Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X280-40S
The AirTAC Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X280-40S 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
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X280-40S
The AirTAC SAUJ80X280-40S is a double-acting, single-rod profile cylinder with an on-site extend-stroke trim window. An external stop screw lets you shorten the working stroke by up to 40 mm, giving a usable extend range of 240-280 mm. The 280 mm nominal stroke acts as the maximum travel. It features a 3/8" port, an M20x1.5 rod thread, and 28 mm adjustable air cushions.
This extruded aluminum profile barrel is shorter than an ISO 15552 cylinder of the same bore. At 0.5 MPa it delivers 2513 N push and 2268 pull force. For sizing, the safe working load is roughly 1508 N (about 60% of the 0.5 MPa push figure), yielding a 128 kg vertical lift capacity with a 2:1 margin. The -S suffix indicates a built-in piston magnet for CMSG, DMSG, or EMSG sensors.
Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X280-40S Technical Specifications
| Model | Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X280-40S |
|---|---|
| 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 SAUJ80 Adjustable Stroke Cylinder SAUJ80X280-40S
| 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 SAUJ80 Adjustable Stroke Cylinder SAUJ80X280-40S Is Used
Variable Pitch Indexing
Dial in the exact 240-280 mm extend position on-site to match different product lengths without swapping the entire actuator.
Adjustable Carton Forming
Fine-tune the 40 mm stop screw window to accommodate varying package heights on a packaging line.
Dynamic Material Push-off
Set precise pusher endpoints for diverting varied pallet loads, relying on the 2513 N push force at 0.5 MPa.
Is the Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X280-40S the Right Cylinder?
When sizing this 80 mm bore, compare it against the 63 mm and 100 mm options. The 63 mm bore provides 1559 N push at 0.5 MPa, while the 100 mm bore offers 3927 N. Choose the SAUJ80X280-40S when your machine needs exact 240-280 mm extend tuning without buying multiple fixed-length cylinders. Mounting options include Basic, FA flange, and LB foot, sharing compatibility with the AirTAC SC series. Because the -S magnet is present, you can mount CMSG/DMSG/EMSG switches directly. For this 280 mm stroke, ensure external guide rails carry side loads to prevent rod binding.
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 SAUJ80 Adjustable Stroke Cylinder SAUJ80X280-40S FAQ
At 0.5 MPa the push force is 2513 N and pull is 2268 N. At 0.7 MPa push is 3518 N, at 0.9 MPa it is 4523 N, and the theoretical max is 513 kgf at 1.0 MPa. The external stop screw allows you to shorten the extend stroke by up to 40 mm on-site, providing a usable travel range of 240-280 mm.
The -S suffix means a piston magnet is built-in, allowing you to mount CMSG, DMSG, or EMSG electronic or reed sensors. Note that the stop screw only sets the end position; it is not a load lock. The air cushion merely decelerates the piston. Because the cylinder will drift on air loss or a centered valve, use an external rod lock or pilot-operated check valve for held loads.
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