Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X115-40S
The AirTAC Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X115-40S is a genuine double-acting profile-type standard air cylinder with a Ø80mm bore and 115mm 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
- Stroke115 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 28 mm
About the Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X115-40S
The SAUJ80X115-40S is a double-acting single-rod profile cylinder with an on-site adjustable extend stroke. An external stop screw lets you trim the 115 mm nominal stroke by up to 40 mm, yielding a usable 75-115 mm window. The extruded aluminum barrel keeps the unit shorter than an ISO 15552 cylinder of the same bore. It features a 3/8" port, an M20x1.5 rod thread, and 28 mm adjustable air cushions.
This 80 mm bore generates 2513 N push and 2268 N pull at 0.5 MPa, peaking at 4523 N push at 0.9 MPa. A practical safe working load is roughly 1508 N, translating to a 128 kg vertical lift with a 2:1 margin. The included -S magnet supports CMSG/DMSG/EMSG switches. For high-heat environments up to 150 C, specify the Viton H seal option.
Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X115-40S Technical Specifications
| Model | Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X115-40S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø80 mm |
| Stroke | 115 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 SAUJ80X115-40S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×115 | 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 SAUJ80X115-40S Is Used
Press Fit Tuning
Dial in the exact 75-115 mm extend position for pressing bearings, allowing on-site adjustment without swapping cylinders.
Variable Diverter Gate
Adjust the divert stroke length on-site to handle changing package sizes on a packaging line.
Adjustable Stopper Arm
Fine-tune the stopping position for pallets of varying widths by turning the external stop screw.
Is the Airtac SAUJ80 Adjustable Stroke Cylinder SAUJ80X115-40S the Right Cylinder?
When sizing this actuator, compare it against the neighboring 63 mm bore (2182 N push at 0.7 MPa) and 100 mm bore (5497 N push at 0.7 MPa) to match your force requirements. Choose the SAUJ over a fixed SAU when you need field stroke tuning without buying a new cylinder. The 40 mm adjust window is ideal for dialing in exact end positions. Basic, FA, and LB mounts are available, sharing compatibility with the AirTAC SC series. The -S suffix ensures you can mount CMSG/DMSG/EMSG sensors. Since the 115 mm stroke is relatively short, side-load guiding is less critical, but always guide the load for rigid mounting.
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 SAUJ80X115-40S FAQ
This 80 mm bore cylinder delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and 4523 N push at 0.9 MPa. The 115 mm nominal extend stroke can be shortened by up to 40 mm on-site via an external stop screw, giving a 75-115 mm usable window. It uses a 3/8" port.
The -S suffix means a piston magnet is built-in for CMSG/DMSG/EMSG switches. Note that the stop screw only sets the end position; it is not a load lock. The air cushion solely decelerates the piston. If air pressure drops, the cylinder will drift, so use an external rod lock or pilot-operated check valve for load holding.
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