Airtac SAUD Double Rod Cylinder SAUD40X280
The AirTAC Airtac SAUD Double Rod Cylinder SAUD40X280 is a genuine double-acting profile-type standard air cylinder with a Ø40mm bore and 280mm stroke, 1/4" 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.
- BoreØ40 mm
- Stroke280 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 21 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 SAUD Double Rod Cylinder SAUD40X280
The AirTAC SAUD40X280 is a double-acting, double-rod profile cylinder. A 16mm rod exits both ends of the hard-anodized aluminum barrel, meaning both faces use the rod-side piston area. This yields an identical output of 528 N each way at 0.5 MPa. The extruded profile body is noticeably shorter than a standard ISO 15552 unit of the same 40mm bore. It uses a 1/4" port and M12x1.25 rod threads.
This twin-rod architecture prevents piston twist during travel, making it ideal for guiding external carriages. Because this specific SKU lacks the internal magnet (-S suffix), it cannot accept CMSG or DMSG reed switches for position sensing. For sizing, the 528 N output at 0.5 MPa translates to a safe working load of roughly 317 N, or a vertical lift capacity of about 27 kg with a 2:1 safety margin.
Airtac SAUD Double Rod Cylinder SAUD40X280 Technical Specifications
| Model | Airtac SAUD Double Rod Cylinder SAUD40X280 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø40 mm |
| Stroke | 280 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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, 21 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAUD Double Rod Cylinder SAUD40X280
| SAU | Profile-type standard cylinder series. |
|---|---|
| 40 | 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 SAUD Double Rod Cylinder SAUD40X280 Is Used
Twin-Tool Shuttle
Drives two opposing pick heads simultaneously with perfectly matched force in both directions, ensuring synchronized part transfer.
Balanced Lift Stage
Raises and lowers a light 27 kg vertical payload with equal push and pull stability, preventing sag on the return stroke.
Anti-Rotation Gauge
Moves a measuring caliper head smoothly without rotational drift, relying on the dual rods for precise linear guidance.
Is the Airtac SAUD Double Rod Cylinder SAUD40X280 the Right Cylinder?
Choose this 40mm bore if you need 528 N of equal bidirectional force at 0.5 MPa. Sizing down, the 32mm bore provides 345 N both ways. Sizing up, the 50mm bore offers 825 N both ways. A double-rod design is the right call when your mechanism requires anti-rotation stability, needs to drive two tools at once, or uses the rear rod extension to trip an external mechanical limit switch. Mounting is limited to Basic, FA flange, and LB foot styles, matching the AirTAC SC series. Since the 280mm stroke exceeds 300mm? No, at 280mm it is just under the threshold, but external load guides are always recommended for smooth operation. Remember this non-magnet SKU cannot host sensors.
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 SAUD Double Rod Cylinder SAUD40X280 FAQ
Because the 16mm rod protrudes from both ends, the push and pull forces are equal. It generates 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa in both directions. The air port is 1/4".
No. The adjustable 21mm air cushions only decelerate the piston near the stroke ends; they do not lock the position. To prevent drift on air loss, you must fit an external rod lock or a pilot-operated check valve.
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