Airtac SAUD Double Rod Cylinder SAUD40X70
The AirTAC Airtac SAUD Double Rod Cylinder SAUD40X70 is a genuine double-acting profile-type standard air cylinder with a Ø40mm bore and 70mm 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
- Stroke70 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 SAUD40X70
The AirTAC SAUD40X70 is a double-acting, double-rod profile cylinder. A 16 mm rod exits both ends of the hard-anodized aluminum barrel, meaning both faces use the rod-side area. This yields equal push and pull force of 528 N each way at 0.5 MPa. The extruded profile body is notably shorter than an ISO 15552 cylinder of the same bore.
Because this SKU lacks the -S magnet suffix, it cannot take a magnetic switch. The 1/4" port drives the piston at 30-800 mm/s. For sizing, a safe working load is roughly 317 N (about 60% of the 0.5 MPa figure), translating to a vertical lift capacity of about 27 kg with a 2:1 safety margin.
Airtac SAUD Double Rod Cylinder SAUD40X70 Technical Specifications
| Model | Airtac SAUD Double Rod Cylinder SAUD40X70 |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 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 SAUD40X70
| SAU | Profile-type standard cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×70 | 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 SAUD40X70 Is Used
Twin-Tool Transfer
Drives two opposing pickers simultaneously from one piston, keeping cycle times synchronized without adding a second valve.
Anti-Rotation Lift
The dual rods prevent twisting during vertical elevation of light chucks, ensuring the payload remains perfectly aligned.
Cam Trip Actuation
Uses the extended back rod to mechanically trigger a limit switch at mid-stroke for older relay-logic machinery.
Is the Airtac SAUD Double Rod Cylinder SAUD40X70 the Right Cylinder?
Choose this 40 mm bore when you need identical force in both directions. If you need less power, the 32 mm bore delivers 345 N both ways; for more thrust, the 50 mm bore provides 825 N. A double rod is the right call for anti-rotation guidance, driving twin tooling, or mounting a cam on the back end. Mounting is limited to Basic, FA flange, and LB foot, matching the AirTAC SC series. At a 70 mm stroke, side loads are minimal, but always guide the load externally on longer strokes. Note this non-magnetic version cannot host sensors.
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 SAUD40X70 FAQ
The force is equal both ways because of the double-rod design. It outputs 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa. The 1/4" port feeds the 16 mm rods.
No, the air cushions only decelerate the piston near the stroke ends; they do not lock the load. For vertical load holding on air loss, you must add an external rod lock or a pilot-operated check valve.
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Standard models are processed and dispatched in 3-5 business days.
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