Airtac SAUD Double Rod Cylinder SAUD40X40S
The AirTAC Airtac SAUD Double Rod Cylinder SAUD40X40S is a genuine double-acting profile-type standard air cylinder with a Ø40mm bore and 40mm 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
- Stroke40 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 SAUD40X40S
The AirTAC SAUD40X40S 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 528 N each way at 0.5 MPa. The unit carries an -S suffix, denoting a built-in piston magnet for CMSG, DMSG, or EMSG reed and electronic switches.
Because of the twin-rod architecture, the rear extension can drive a second tool or carry a sensor cam without stealing stroke length. The profile barrel is shorter than a standard ISO 15552 unit of the same bore. Based on the 528 N output, your safe working load is roughly 317 N, which translates to a vertical lift capacity of about 27 kg with a 2:1 safety margin. This 40mm bore uses a 1/4" port and M12x1.25 rod threads.
Airtac SAUD Double Rod Cylinder SAUD40X40S Technical Specifications
| Model | Airtac SAUD Double Rod Cylinder SAUD40X40S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 SAUD40X40S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 SAUD40X40S Is Used
Dual-End Transfer
Drives a parts pusher on the front rod while the rear rod simultaneously triggers a DMSG sensor cam to confirm stroke completion.
Anti-Twist Clamping
Secures asymmetrical workpieces during machining. The twin 16mm rods prevent piston rotation without needing external linear bearings.
Balanced Vertical Lift
Raises and lowers a 27kg fixture with equal force both ways. The symmetrical thrust prevents sagging drift on the downward return stroke.
Is the Airtac SAUD Double Rod Cylinder SAUD40X40S the Right Cylinder?
Select the SAUD40X40S when your mechanism requires strict anti-rotation guidance, synchronized twin-tool driving, or rear-end switch actuation. If you need less force, the 32mm bore delivers 345 N both ways; if you need more, the 50mm bore provides 825 N both ways. Mounting is limited to Basic, FA flange, and LB foot styles, matching the AirTAC SC series. For this 40mm stroke, side loads are minimal, but any stroke over 300mm requires an external guide to prevent rod binding. The included magnet allows precise end-of-stroke 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 SAUD40X40S FAQ
The force is equal in both directions due to the double-rod design. It generates 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa. The 1/4" port and 21mm adjustable cushions handle speeds of 30-800 mm/s.
No. The air cushions only decelerate the piston near the stroke ends; they do not act as a brake. The piston will drift on air loss. For load holding, you must install an external rod lock or a pilot-operated check valve.
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