Airtac SAUD Double Rod Cylinder SAUD40X650S
The AirTAC Airtac SAUD Double Rod Cylinder SAUD40X650S is a genuine double-acting profile-type standard air cylinder with a Ø40mm bore and 650mm 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
- Stroke650 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 SAUD40X650S
The AirTAC SAUD40X650S is a double-acting, double-rod profile cylinder. A rod exits both ends, meaning push and pull forces are equal at 528 N each way at 0.5 MPa. The extruded aluminium body is noticeably shorter than an ISO 15552 cylinder of the same 40 mm bore.
This -S variant includes a piston magnet for CMSG, DMSG, or EMSG switches. The 1/4" port and M12x1.25 rod thread handle speeds of 30-800 mm/s. Based on the 528 N output, your safe working load is roughly 317 N, yielding a vertical lift capacity of about 27 kg with a 2:1 safety margin.
Airtac SAUD Double Rod Cylinder SAUD40X650S Technical Specifications
| Model | Airtac SAUD Double Rod Cylinder SAUD40X650S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø40 mm |
| Stroke | 650 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 SAUD40X650S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×650 | 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 SAUD40X650S Is Used
Synchronized Transfer
Drives two parallel pick-and-place grippers simultaneously from one piston, keeping movements perfectly aligned without twisting.
Cam Position Sensing
Uses the protruding back rod to trip a CMSG reed switch, confirming full retraction in tight spaces where front sensing is impossible.
Anti-Rotation Tooling
Carries a deburring head that must remain perfectly flat against the workpiece, using the twin rods to resist angular deflection.
Is the Airtac SAUD Double Rod Cylinder SAUD40X650S the Right Cylinder?
Choose this 40 mm bore (528 N both ways) over the smaller 32 mm (345 N) if you need extra thrust, or step up to the 50 mm (825 N) for heavier tooling. A double rod is ideal for anti-rotation guidance or mounting a switch cam on the back rod. Mounting uses SC-series FA or LB brackets. Because the stroke is 650 mm, add external guides to prevent rod bending under 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 SAUD40X650S FAQ
Force is equal in both directions because both faces have a rod. 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 feeds both chambers equally.
No. The adjustable air cushion only decelerates the piston near stroke end; it does not lock the position. For secure load holding during air loss, install an external rod lock or pilot-operated check valve.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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