Airtac SAUD Double Rod Cylinder SAUD40X155S
The AirTAC Airtac SAUD Double Rod Cylinder SAUD40X155S is a genuine double-acting profile-type standard air cylinder with a Ø40mm bore and 155mm 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
- Stroke155 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 SAUD40X155S
The AirTAC SAUD40X155S is a double-acting, double-rod profile cylinder. A 16mm rod exits both ends of the hard-anodized aluminum extruded barrel, meaning both faces use the rod-side piston area. This yields equal push and pull force of 528N at 0.5MPa. The unit is shorter than an ISO 15552 cylinder of the same 40mm bore, with a 1/4" port and M12x1.25 rod thread.
Because the -S suffix denotes a built-in piston magnet, you can mount CMSG, DMSG, or EMSG switches directly. The extended back rod is perfect for carrying a sensor cam or driving twin tools simultaneously. For sizing, the 528N output at 0.5MPa gives a safe working load of about 317N, or a vertical lift capacity of roughly 27kg with a 2:1 margin.
Airtac SAUD Double Rod Cylinder SAUD40X155S Technical Specifications
| Model | Airtac SAUD Double Rod Cylinder SAUD40X155S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø40 mm |
| Stroke | 155 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 SAUD40X155S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×155 | 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 SAUD40X155S Is Used
Twin-Tool Transfer
Drives two synchronized pick-and-place grippers from one piston, ensuring perfectly mirrored motion without adding a second actuator.
Cam-Triggered Sorting
Uses the protruding back rod as a mechanical cam to trip a limit switch, confirming full stroke position in retrofitted machinery.
Anti-Rotation Lift
Lifts delicate electronics trays vertically with high torsional stability, preventing the platform from twisting during transit.
Is the Airtac SAUD Double Rod Cylinder SAUD40X155S the Right Cylinder?
Choose this 40mm bore when you need 528N of equal force in both directions. If you need less force, the 32mm bore provides 345N both ways. If your application requires more, step up to the 50mm bore for 825N. The double-rod architecture is the right call for anti-rotation guidance, synchronized twin-tool driving, or back-end switch tripping. Mounting is limited to Basic, FA flange, and LB foot styles, matching the AirTAC SC series. At 155mm stroke, side loads are minimal, but always use external guides for strokes over 300mm. The -S magnet allows electronic or reed 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 SAUD40X155S FAQ
The force is equal in both directions because it is a double-rod design. It outputs 528N at 0.5MPa, 739N at 0.7MPa, and 950N at 0.9MPa. The 1/4" port and 16mm rod ensure balanced operation.
No, a standard cylinder drifts when air is lost, as the adjustable 21mm cushions only decelerate at stroke ends. For load holding, install an external rod lock or pilot-operated check valve.
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