Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 40mm 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
- Stroke40 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-40S
The AirTAC SAIJ80X40-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. It features an 80mm bore and a 40mm nominal stroke, but the integrated rear stopper screw provides a usable travel window of 0 to 40mm. This allows you to fine-tune the retract end-position at commissioning without physically swapping the cylinder or adding external stops.
Built with a SUS420J2 stainless steel rod and PT tapered port threads, this unit is ready for position sensing via its built-in magnet, which interfaces seamlessly with AirTAC CMSE reed and DMSE solid-state sensors. The extruded aluminum barrel includes sensor grooves on both sides, and the adjustable stopper acts purely as a travel limit, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 40 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 SAIJ80AX40-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×40 | 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 SAIJ80AX40-40S Is Used
Machine Changeover
Dial in the exact retract position from 0 to 40mm during product size transitions without changing out the cylinder.
End-Stop Tuning
Fine-tune the final retract position at machine commissioning to absorb mechanical tolerances and achieve precise alignment.
Clamping Force Control
Leverage the 2513N push force at 0.5 MPa to securely hold workpieces, adjusting the stroke to accommodate different part heights.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX40-40S the Right Cylinder?
Choose this 80mm bore when an application requires substantial thrust, such as 2513N push and 2268N pull at 0.5 MPa, stepping up from a 63mm unit that provides 1559N. The 40mm adjustment range is exceptionally useful for product changeovers on a packaging line, letting operators dial in a new retract distance instantly. Because the nominal stroke is 40mm, the full travel can be dialed back to zero if needed.
For load-holding requirements without live air, remember that the SAIJ rear adjuster is a stop, not a lock; you would need an external pilot-operated check valve or a related AirTAC type like the SAIL or BSAI. This SAIJ80X40-40-S is dimensionally interchangeable per ISO 15552 and supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since the stroke is under 300mm, side-load stress on the 25mm rod is manageable without an external guide.
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 SAIJ80AX40-40S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder generates a push force of 2513N and a pull force of 2268N. It can reach up to 4523N push force at 0.9 MPa.
The rear adjuster screw allows you to trim the effective travel back by up to 40mm. Because the nominal stroke is 40mm, the usable travel window is 0 to 40mm, letting you set the exact retract end-position without external stops.
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