Airtac SAUJ100 Adjustable Cylinder SAUJ100X850-40S
The AirTAC Airtac SAUJ100 Adjustable Cylinder SAUJ100X850-40S is a genuine double-acting profile-type standard air cylinder with a Ø100mm bore and 850mm stroke, 1/2" 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.
- BoreØ100 mm
- Stroke850 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 29 mm
About the Airtac SAUJ100 Adjustable Cylinder SAUJ100X850-40S
The AirTAC SAUJ100X850-40S is a double-acting single-rod profile cylinder with an on-site adjustable extend stroke. An external stop screw lets you trim the 850mm nominal stroke by up to 40mm, yielding a usable range of 810-850mm. The extruded aluminum profile barrel makes it shorter than an ISO 15552 cylinder of the same bore. It features a 1/2 inch port, M20x1.5 rod thread, and 29mm adjustable air cushions.
This 100mm bore delivers substantial power: 3927N push and 3681N pull at 0.5MPa, scaling to 7068N at 0.9MPa. A practical computed insight sets the safe working load around 2356N (60% of the 0.5MPa push force), translating to a 200kg vertical lift with a 2:1 safety margin. The -S suffix indicates a built-in magnet for CMSG, DMSG, or EMSG sensors. Note that the stop screw sets end position but does not lock the load; use an external rod lock for holding.
Airtac SAUJ100 Adjustable Cylinder SAUJ100X850-40S Technical Specifications
| Model | Airtac SAUJ100 Adjustable Cylinder SAUJ100X850-40S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø100 mm |
| Stroke | 850 mm |
| Acting type | Double acting |
| Port size | 1/2" |
| 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, 29 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAUJ100 Adjustable Cylinder SAUJ100X850-40S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×850 | 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 SAUJ100 Adjustable Cylinder SAUJ100X850-40S Is Used
Press Fit Tuning
Allows operators to dial in the exact 810-850mm extend position for pressing bearings without machining custom spacers.
Variable Length Diverter
Adjusts the extend stop on-site to deflect different package sizes on a sorting line by up to 40mm.
Pallet Positioning Stop
Sets a precise endpoint for pallets entering a wrap station, fine-tuned during commissioning via the external screw.
Is the Airtac SAUJ100 Adjustable Cylinder SAUJ100X850-40S the Right Cylinder?
When sizing this actuator, compare both directions: the 100mm bore yields 3927N push versus 3681N pull at 0.5MPa, while the smaller 80mm bore offers 2513N push. Choose the SAUJ over a fixed SAU when your machine assembly requires field tuning of the extend endpoint within that 40mm window. Mounting options include Basic, FA flange, and LB foot styles, sharing compatibility with the AirTAC SC series. The -S magnet supports CMSG/DMSG/EMSG electronic or reed switches. Because the 850mm stroke is long, always use external guides to prevent rod bending and manage side loads. For load holding on air loss, add a pilot-operated check valve since the cushion only decelerates.
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 SAUJ100 Adjustable Cylinder SAUJ100X850-40S FAQ
At 0.5MPa it provides 3927N push and 3681N pull; at 0.7MPa push is 5497N, and at 0.9MPa it is 7068N. The theoretical max is 801kgf at 1.0MPa. The 850mm extend stroke can be shortened by up to 40mm on-site using the external stop screw, giving a usable range of 810-850mm. It uses a 1/2 inch port.
The -S suffix means a piston magnet is installed for direct mounting of CMSG, DMSG, or EMSG position sensors. The cylinder does not hold the load if air pressure drops; the adjustable stop screw only sets the end position, and the cushion solely decelerates the piston. For secure load holding, install an external rod lock or pilot-operated check valve.
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