Airtac SAUD Double Rod Cylinder SAUD40X290
The AirTAC Airtac SAUD Double Rod Cylinder SAUD40X290 is a genuine double-acting profile-type standard air cylinder with a Ø40mm bore and 290mm 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
- Stroke290 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 SAUD40X290
The AirTAC SAUD40X290 is a double-acting, double-rod profile cylinder with a 40 mm bore and 290 mm stroke. A 16 mm rod exits both ends, meaning push and pull forces are identical at 528 N each way at 0.5 MPa. The extruded aluminum body is noticeably shorter than a standard ISO 15552 unit of the same bore. This model uses a 1/4 inch port and M12x1.25 rod threads.
Because the piston travels 290 mm, you should use an external guide to prevent side-load sag. This SKU has no internal magnet, so it cannot carry a CMSG or DMSG switch. For sizing, the safe working load is roughly 317 N (60 percent of the 528 N figure), which translates to a vertical lift capacity of about 27 kg with a 2:1 safety margin. The standard TPU seals handle -20 to +70 C, while a Viton H option extends this to 150 C.
Airtac SAUD Double Rod Cylinder SAUD40X290 Technical Specifications
| Model | Airtac SAUD Double Rod Cylinder SAUD40X290 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø40 mm |
| Stroke | 290 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 SAUD40X290
| SAU | Profile-type standard cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×290 | 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 SAUD40X290 Is Used
Twin-Tool Transfer
Drives two opposing pickers simultaneously from one piston, ensuring perfectly synchronized grip and release on a 290 mm pitch.
Balanced Lift Station
Raises and lowers a 27 kg vertical payload with identical push and pull thrust, preventing sagging drift on the upstroke.
Anti-Rotation Indexer
Uses the dual rod geometry to resist torsional twist while shifting a small machining head back and forth across a 290 mm span.
Is the Airtac SAUD Double Rod Cylinder SAUD40X290 the Right Cylinder?
Choose the SAUD40X290 when you need equal force in both directions for anti-rotation or twin-tool tasks. If you need less force, the 32 mm bore delivers 345 N both ways at 0.5 MPa; if you need more, step up to the 50 mm bore for 825 N both ways. This 290 mm stroke exceeds 300 mm? No, it is 290 mm, but adding an external linear guide is still best practice to absorb side loads. Mounting is limited to Basic, FA flange, and LB foot styles, matching the AirTAC SC series. Note that this specific SKU lacks the -S magnet, so it cannot support magnetic sensing.
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 SAUD40X290 FAQ
The force is equal in both directions because of the double-rod design. It outputs 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa on both the push and pull strokes. The unit features a 1/4 inch port.
No, a plain double-rod cylinder drifts when air is lost or the valve is centered. The adjustable 21 mm air cushions only decelerate the piston near the stroke ends; they do not lock it. Use an external rod lock or pilot-operated check valve for secure load holding.
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