Airtac SAUD Double Rod Cylinder SAUD50X20S
The AirTAC Airtac SAUD Double Rod Cylinder SAUD50X20S is a genuine double-acting profile-type standard air cylinder with a Ø50mm bore and 20mm 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.
- BoreØ50 mm
- Stroke20 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- 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 SAUD50X20S
The AirTAC SAUD50X20S is a double-acting, double-rod profile cylinder. A 20mm rod exits both ends of the 50mm bore, meaning both faces use the rod-side area to deliver an identical 825 N output at 0.5 MPa. The extruded aluminium profile barrel is noticeably shorter than a standard ISO 15552 unit of the same bore. Fitted with the -S option, it carries a piston magnet for CMSG, DMSG or EMSG switches.
This twin-rod geometry prevents rotation and provides anti-twist guidance without external guides. The 1/4" port and M16x1.5 rod thread handle flows for a 30-800 mm/s speed range. Based on the 825 N figure, the safe working load is roughly 495 N, translating to a vertical lift capacity of about 42 kg with a 2:1 safety margin.
Airtac SAUD Double Rod Cylinder SAUD50X20S Technical Specifications
| Model | Airtac SAUD Double Rod Cylinder SAUD50X20S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 SAUD50X20S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×20 | 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 SAUD50X20S Is Used
Gripper Actuation
Drives a synchronized twin-tool gripper where the equal push and pull force ensures balanced clamping pressure on delicate parts.
Short Lift Stations
Lifts small 42 kg fixtures vertically with a 2:1 margin, using the back rod to trigger a DMSG sensor for precise height confirmation.
Non-Rotating Ejector
Ejects machined components from a fixture without rotational drift, relying on the dual rods for strict anti-twist guidance.
Is the Airtac SAUD Double Rod Cylinder SAUD50X20S the Right Cylinder?
Choose this 50mm bore (825 N both ways at 0.5 MPa) if your application demands synchronized motion or non-rotating anti-twist guidance. Stepping down to the 40mm bore drops the equal force to 528 N, while moving up to the 63mm bore increases it to 1402 N. The rear protruding rod can carry a switch cam to trip sensors at the back end. Mounting is limited to Basic, FA flange and LB foot styles, matching the AirTAC SC series. Because this 20mm stroke is very short, side-load risks are minimal, but always guide external loads on longer strokes. The -S magnet allows electronic or reed 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 SAUD50X20S FAQ
Because it is a double-rod cylinder, the force is equal in both directions. It provides 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and 1484 N at 0.9 MPa. The 1/4" port feeds both chambers equally.
No, the air cushion only decelerates the piston near the stroke end and does not lock the position. To hold a load securely on air loss, you must fit an external rod lock or a pilot-operated check valve.
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