Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 290mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-40
The AirTAC SAIJ80X290-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 290 mm nominal stroke by up to 40 mm. This creates a precise 250-290 mm usable travel window, perfect for fine-tuning end positions during commissioning without swapping out the entire actuator. It delivers robust thrust, generating 2513 N of push force and 2268 N of pull force at 0.5 MPa.
This model features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and uses PT tapered port threads with a G3/8 connection. The 25 mm rod diameter and M20x1.5 rod thread provide excellent resistance against side loads, though at 290 mm of travel, external guiding remains recommended for optimal stability. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept CMSE or DMSE switches if a magnet is added later.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 290 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 | 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 SAIJ80 Adjustable Cylinder SAIJ80AX290-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×290 | 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 SAIJ80AX290-40 Is Used
Machine Changeover
Quickly modify the 250-290 mm travel endpoint during product size transitions without physically replacing the cylinder or adding external stopper blocks.
Variable End Stops
Ideal for diverter gates or push-off mechanisms where the exact retraction position must be fine-tuned on-site to accommodate different package lengths.
Stroke Calibration
Dial in the precise end-of-stroke position during initial commissioning to prevent mechanical interference, using the 40 mm adjustment range to absorb tolerance stack-up.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX290-40 the Right Cylinder?
Select this 80 mm bore actuator when an application requires substantial force—such as the 2513 N push force at 0.5 MPa—combined with variable end-stop positioning. If your setup needs less thrust, stepping down to a 63 mm bore yields 1559 N of push force, whereas moving up to a 100 mm bore provides 3927 N. The adjustable stroke is ideal for product-size changeovers on a line, replacing the need for fixed-stroke SAI cylinders when exact end positions might vary.
When integrating this model, remember the rear adjuster functions strictly as a travel stop, not a locking device; it cannot hold a load without continuous live air pressure. For load-holding requirements without air pressure, consider an external rod lock or explore AirTAC SAIL or BSAI series cylinders. This unit operates at speeds between 30-800 mm/s and is dimensionally interchangeable per ISO 15552, utilizing a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ80AX290-40 FAQ
At an operating pressure of 0.5 MPa, this 80 mm bore cylinder generates a push force of 2513 N and a pull force of 2268 N. If operated at 0.7 MPa, the push force increases to 3518 N.
The rear adjuster acts as a mechanical stop that allows you to shorten the 290 mm nominal stroke by up to 40 mm, providing a usable travel window of 250-290 mm. It only sets the travel end and does not lock or hold the load without live air pressure.
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