
The AirTAC Airtac SAUD Double Rod Cylinder SAUD40X225 is a genuine double-acting profile-type standard air cylinder with a Ø40mm bore and 225mm 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.
The AirTAC SAUD40X225 is a double-acting, double-rod profile cylinder featuring a 40 mm bore and 225 mm stroke. A 16 mm rod exits both ends, meaning both faces use the rod-side piston area. This yields exactly 528 N of force at 0.5 MPa in both directions. The extruded aluminium body is noticeably shorter than an ISO 15552 unit of the same bore. It uses a 1/4 inch port and adjustable 21 mm cushions at each end.
Because the rod protrudes at the back, you can mount a sensor cam directly on it, though this specific SKU lacks the internal magnet and cannot host a switch. For sizing, the 528 N output at 0.5 MPa translates to a safe working load of roughly 317 N, or a vertical lift capacity of about 27 kg with a 2:1 safety margin. You can also specify Viton H seals to push the operating temperature up to 150 C.
| Model | Airtac SAUD Double Rod Cylinder SAUD40X225 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 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.
| 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.
| SAU | Profile-type standard cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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.
Drives two opposing pick-off fingers simultaneously, ensuring perfectly synchronized part ejection on an assembly line.
Lifts a 27 kg vertical payload using the equal push and pull force, relying on the twin rods to prevent carriage twist.
Uses the extended back rod to mechanically trip an external limit valve at the precise end of the 225 mm stroke.
Choose this 40 mm bore if you need 528 N of equal bidirectional force at 0.5 MPa. Stepping down, the 32 mm bore provides 345 N both ways. Stepping up, the 50 mm bore offers 825 N. A double-rod design is the right call when your mechanism requires anti-rotation guidance, needs to drive two tools at once, or uses the back rod to trip an external switch. Mounting is limited to Basic, FA flange, and LB foot styles, matching the AirTAC SC series. At a 225 mm stroke, side loads are moderate, but always guide the load to prevent rod binding. Remember that this non-magnetic SKU cannot support position sensors.
Quick checklist
Because the 16 mm rod exits both ends, the 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. The unit features a 1/4 inch port.
This SKU lacks the internal magnet, so it cannot host magnetic switches. Additionally, the air cushions only decelerate the piston; they do not hold a load. To prevent drift on air loss, install an external rod lock or pilot-operated check valve.
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