Airtac SAUD Double Rod Cylinder SAUD40X425S
The AirTAC Airtac SAUD Double Rod Cylinder SAUD40X425S is a genuine double-acting profile-type standard air cylinder with a Ø40mm bore and 425mm 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
- Stroke425 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 SAUD40X425S
The AirTAC SAUD40X425S is a double-acting, double-rod profile cylinder. A 16mm rod exits both ends, meaning the push and pull forces are identical at 528 N each way at 0.5 MPa. The extruded aluminum barrel keeps the unit shorter than an ISO 15552 cylinder of the same bore. This -S model includes a piston magnet for position sensing.
With a 425mm stroke, external guides are recommended to prevent rod bending under side loads. The 1/4" port drives the 40mm bore at 30-800 mm/s. A computed buyer insight: the safe working load is roughly 317 N, allowing a vertical lift of about 27 kg with a 2:1 safety margin. For high-heat environments up to 150 C, specify the Viton H seal option.
Airtac SAUD Double Rod Cylinder SAUD40X425S Technical Specifications
| Model | Airtac SAUD Double Rod Cylinder SAUD40X425S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø40 mm |
| Stroke | 425 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 SAUD40X425S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×425 | 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 SAUD40X425S Is Used
Twin-Tool Transfer
Drives two synchronized workpieces from opposite rod ends to cut cycle time in half on a packaging line.
Cam-Actuated Sensing
Uses the extended back rod to carry a switch cam, triggering external proximity sensors in tight spaces.
Anti-Rotation Lift
Lifts delicate electronics trays without twisting, relying on the dual rods for precise non-rotating guidance.
Is the Airtac SAUD Double Rod Cylinder SAUD40X425S the Right Cylinder?
Select this 40mm bore (528 N equal force) if you need anti-rotation guidance or twin tooling. Sizing down, the 32mm bore yields 345 N; sizing up, the 50mm bore yields 825 N. Mounting is limited to Basic, FA flange, and LB foot, matching the AirTAC SC series. Because the 425mm stroke exceeds 300mm, always use an external guide to absorb side loads and prevent rod bending. The -S magnet supports CMSG, DMSG, or EMSG switches.
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 SAUD40X425S FAQ
Because the 16mm rod exits both ends, force is equal in both directions: 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa. It uses a 1/4" port.
No. The air cushions only decelerate the piston near stroke end; they do not lock. For load holding on air loss, you must fit an external rod lock or pilot-operated check valve.
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