Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-40
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX145-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 145mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke145 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 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 SAIJ80 Adjustable Cylinder SAIJ80AX145-40
Its 145mm nominal stroke can be dialed back by up to 40mm, creating a precise 105-145mm usable travel window for fine-tuning end positions during commissioning. The extruded aluminum barrel features sensor grooves on both sides for straightforward detection integration.
This configuration utilizes a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance and features a PT tapered port thread. The 25mm rod diameter and M20x1.5 rod thread provide a robust interface that handles side loads well, though external guides remain recommended for optimal bearing life. The rear adjuster acts strictly as a travel stop to set deceleration, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 145 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 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 SAIJ80 Adjustable Cylinder SAIJ80AX145-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×145 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-40 Is Used
Machine Changeover
Dial in the 105-145mm travel window during product size changes to set new end positions rapidly without changing the cylinder.
End-Position Tuning
Fine-tune the retract stop during commissioning to perfect deceleration and avoid mechanical crashes without external stops.
Variable Stops
Adjust the stroke on packaging conveyors to accommodate different carton lengths on the fly using the rear 40mm adjuster.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-40 the Right Cylinder?
The adjustable 105-145mm travel window is ideal for product changeovers on a line, allowing operators to dial in the exact end-stop without physically swapping cylinders or adding external stopper blocks. For fixed-position tasks that never require reconfiguration, a standard SAI cylinder provides a simpler setup.
When integrating this model, note that the mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles. Because the 145mm stroke is under the 300mm threshold, side-load concerns are minimal, but the load must be externally guided if operating near the 30-800mm/s speed limit. If your process requires the load to be mechanically held without air pressure, this cylinder is insufficient; you should pivot to the SAIL (air-released lock) or BSAI (clamp-lock) variants.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/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/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX145-40 FAQ
At 0.7MPa, the push force increases to 3518N.
The rear adjuster allows you to shorten the 145mm nominal stroke by up to 40mm, providing a usable travel window of 105-145mm. It acts as a mechanical stop to set the end position and does not lock the load without live air.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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