Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X240-50S
The AirTAC Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X240-50S is a genuine double-acting profile-type standard air cylinder with a Ø80mm bore and 240mm stroke, 3/8" 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.
- BoreØ80 mm
- Stroke240 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 28 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 SAUJ80 Adjustable Stroke Cylinder SAUJ80X240-50S
The AirTAC SAUJ80X240-50S is a double-acting single-rod profile cylinder with an on-site extend stroke adjustment window of 50mm. You can trim the 240mm nominal stroke down to 190mm using the external stop screw. It features a 3/8 inch port, an M20x1.5 piston rod, and 28mm adjustable air cushions. The extruded aluminum profile barrel makes it shorter than an ISO 15552 cylinder of the same bore.
This 80mm bore generates 2513N push and 2268N pull at 0.5MPa, scaling to 4523N at 0.9MPa. A practical computed insight: the safe working load is roughly 1508N (about 60% of the 0.5MPa push figure), and it can vertically lift approximately 128kg with a 2:1 safety margin. The -S suffix means a built-in magnet is present for CMSG, DMSG, or EMSG position sensing.
Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X240-50S Technical Specifications
| Model | Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X240-50S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø80 mm |
| Stroke | 240 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| Rod thread | M20×1.5 |
| 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, 28 mm |
| Max stroke | Up to 1500 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X240-50S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×240 | 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 SAUJ80 Adjustable Stroke Cylinder SAUJ80X240-50S Is Used
Press Fit Tuning
Allows operators to dial in the exact 190-240mm extend position for inserting bearings without changing hard stops on the machine frame.
Variable Depth Sealing
Ideal for packaging lines that need to adjust the upper seal head height on the fly to accommodate different carton depths.
Adjustable Diverters
Perfect for conveyor sorting gates where the extend reach must be fine-tuned during installation to match varying product widths.
Is the Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X240-50S the Right Cylinder?
When sizing this unit, look at both neighboring bores and the 0.5MPa force class. The 63mm bore yields 1559N push at 0.5MPa, while the 100mm bore hits 3927N; this 80mm model sits comfortably in the middle at 2513N. Choose the SAUJ over a fixed SAU when your machine assembly requires field tuning of the extend end position without buying multiple cylinders. The 50mm adjust window lets you fine-tune the stroke on-site. Mounting options include Basic, FA flange, and LB foot, with compatibility matching the AirTAC SC series only. The -S magnet allows for electronic or reed sensor tracking. For any stroke over 300mm, ensure you use external guide rails to prevent side-load wear on the rod.
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 SAUJ80 Adjustable Stroke Cylinder SAUJ80X240-50S FAQ
At 0.5MPa this 80mm bore cylinder provides 2513N push and 2268N pull force. At 0.7MPa it pushes 3518N, and at 0.9MPa it pushes 4523N. The theoretical maximum force is 513kgf at 1.0MPa. The external stop screw allows you to shorten the extend stroke by up to 50mm, giving a usable extend range of 190-240mm from the 240mm nominal maximum.
The -S suffix indicates a built-in piston magnet so you can mount CMSG, DMSG, or EMSG sensors for position detection. Note that a standard cylinder does not hold a load if air pressure is lost; the piston will drift and the 28mm air cushion only decelerates near the end of travel. The external stop screw sets the end position but is not a load lock. For secure load holding, install an external rod lock or a pilot-operated check valve.
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