Airtac SAUJ100 Adjustable Cylinder SAUJ100X70-40S
The AirTAC SAUJ100 Adjustable Cylinder SAUJ100X70-40S is a genuine double-acting profile-type standard air cylinder with a Ø100mm bore and 70mm 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
- Stroke70 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 29 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 SAUJ100 Adjustable Cylinder SAUJ100X70-40S
The AirTAC SAUJ100X70-40S is a double-acting, double-rod profile cylinder with an on-site adjustable extend stroke. An external stop screw lets you shorten the 70 mm nominal stroke by up to 40 mm, yielding a usable working range of 30-70 mm. This prevents ordering custom cylinders for field adjustments. The extruded aluminum profile is notably shorter than an ISO 15552 unit of the same bore. It features a 1/2 inch port, an M20x1.5 rod thread, and 29 mm adjustable air cushions.
The -S suffix means a piston magnet is installed for CMSG, DMSG, or EMSG switches. Note that the stop screw sets the end position but does not lock the load; you need an external rod lock for drift prevention.
Airtac SAUJ100 Adjustable Cylinder SAUJ100X70-40S Technical Specifications
| Model | Airtac SAUJ100 Adjustable Cylinder SAUJ100X70-40S |
|---|---|
| Series | SAU profile-type cylinder |
| Bore size | Ø100 mm |
| Stroke | 70 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAUJ100 Adjustable Cylinder SAUJ100X70-40S
| SAU | Profile-type standard cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×70 | 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 SAUJ100X70-40S Is Used
Press Fit Stations
Inserts bearings into housings where material thickness varies, using the 40 mm stroke adjustment to dial in the exact pressing depth on-site.
Variable Depth Sealing
Seals cartons of differing heights on a single line, shortening the extend stroke by up to 40 mm to avoid crushing smaller packages.
Adjustable Stops
Acts as a physical end-stop for incoming pallets, allowing operators to quickly reposition the stop point for different pallet sizes without changing hardware.
Is the Airtac SAUJ100 Adjustable Cylinder SAUJ100X70-40S the Right Cylinder?
If your application requires less force, the 80 mm option saves space. If you need more power, there is no larger bore in this series, so you would evaluate alternative multi-cylinder setups. Choose the SAUJ adjustable type over a fixed SAU cylinder when your machine assembly requires minor extend length tuning without buying new parts. The 40 mm adjust window here is ideal for prototyping or absorbing mechanical tolerances. Mounting options include Basic, FA flange, and LB foot styles, compatible with the AirTAC SC series. The -S magnet supports electronic and reed sensors. For this 70 mm stroke, side-loading is minimal, but for any stroke over 300 mm, always use external guide rails to prevent piston binding.
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 SAUJ100X70-40S FAQ
At 0.7 MPa push is 5497 N, and at 0.9 MPa it is 7068 N. The theoretical max is 801 kgf at 1.0 MPa. The 70 mm nominal extend stroke can be shortened by up to 40 mm via the external stop screw, giving a 30-70 mm usable range. It uses a 1/2 inch port and 29 mm adjustable cushions.
The -S suffix indicates a built-in piston magnet for direct mounting of CMSG, DMSG, or EMSG position switches. The external stop screw mechanically limits the piston travel to shorten the extend stroke on-site. This screw only sets the end position; it is not a load lock. Because the cylinder drifts on air loss, you must add an external pilot-operated check valve or rod lock to hold a suspended load.
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