Airtac SAUD Double Rod Cylinder SAUD40X850
The AirTAC Airtac SAUD Double Rod Cylinder SAUD40X850 is a genuine double-acting profile-type standard air cylinder with a Ø40mm bore and 850mm 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
- Stroke850 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 SAUD40X850
The AirTAC SAUD40X850 is a double-acting, double-rod profile cylinder. A 16 mm rod protrudes from both ends of the hard-anodized extruded aluminum barrel, meaning the push and pull forces are identical at 528 N each way at 0.5 MPa. This compact profile body is notably shorter than an ISO 15552 cylinder of the same 40 mm bore. It features a 1/4 inch port and adjustable air cushions of 21 mm at each end.
Because the rod exits both faces, this unit provides excellent anti-rotation guidance and can drive twin tooling simultaneously. Without a magnet, this specific SKU cannot accept position sensors. For sizing, the 528 N output yields a safe working load of roughly 317 N, which translates to a vertical lift capacity of about 27 kg with a 2:1 safety margin.
Airtac SAUD Double Rod Cylinder SAUD40X850 Technical Specifications
| Model | Airtac SAUD Double Rod Cylinder SAUD40X850 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø40 mm |
| Stroke | 850 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 SAUD40X850
| SAU | Profile-type standard cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×850 | 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 SAUD40X850 Is Used
Twin-Tool Synchronization
Drives two opposing grippers or forming tools at once, using the dual rods to keep both ends perfectly phased without torsional twist.
Long-Reach Edge Guide
Handles an 850 mm traverse for positioning wide sheet materials, relying on the rigid profile barrel to maintain parallel tracking.
Anti-Rotation Clamp
Secures asymmetrical workpieces where a single rod would bind, as the second rod prevents piston rotation during the clamp cycle.
Is the Airtac SAUD Double Rod Cylinder SAUD40X850 the Right Cylinder?
When sizing this 40 mm bore, stepping down to a 32 mm bore yields 345 N, while stepping up to a 50 mm bore provides 825 N of equal bidirectional force. Choose this double-rod configuration when your mechanism requires strict anti-twist stability, synchronized dual-tool driving, or a back-rod cam. Mounting is limited to Basic, FA flange, and LB foot styles, matching the AirTAC SC series. Because this is a non-magnetized SKU, it cannot host CMSG or DMSG switches. At 850 mm, this long stroke demands external guide rails to prevent rod bending and absorb side loads.
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 SAUD40X850 FAQ
The force is equal in both directions because the 16 mm rod exits both ends. It generates 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa. The unit operates at 30-800 mm/s and uses a 1/4 inch port.
This SKU lacks a magnet, so it cannot accept CMSG or DMSG switches. Furthermore, it will not hold a load without live air; the 21 mm cushions only decelerate near stroke end. Use an external rod lock or pilot-operated check valve for secure load holding.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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