Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 225mm 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
- Stroke225 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-20S
The AirTAC SAIJ80X225-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to fine-tune the effective travel window anywhere between 205 and 225 mm. Delivering a robust 4523N of push force at 0.9 MPa, it is built to handle demanding industrial loads while maintaining standard ISO 15552 mounting dimensions.
This specific SKU features a SUS420J2 stainless steel rod for superior corrosion resistance and a PT tapered port thread for secure pneumatic sealing. Because it includes the -S magnet option, the extruded aluminum barrel integrates seamlessly with AirTAC CMSE reed and DMSE electronic solid-state sensors via the dual-side sensor grooves. The rear adjuster acts purely as a travel stop for end-position tuning and does not lock the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 225 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 SAIJ80AX225-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×225 | 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 SAIJ80AX225-20S Is Used
Machine Changeover
Quickly reconfigure the end-stop position by up to 20mm during product size transitions on a packaging line, avoiding the need to physically swap out the cylinder.
Assembly Calibration
Fine-tune the 205-225mm travel window during initial commissioning to perfectly seat components or press fittings without over-traveling.
Variable End-Stop Actuation
Handle multiple material thicknesses on a single conveyor system by adjusting the retract end position to accommodate varying process depths.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-20S the Right Cylinder?
Selecting this 80mm bore over a smaller 63mm bore (which provides 2805N push force at 0.9 MPa) gives you significantly higher thrust for heavier actuation tasks, while stepping up to a 100mm bore would yield 7068N if your application demands even more power. The adjustable stroke is ideal for machine changeovers, allowing you to dial in the exact end-stop position without swapping cylinders or adding external mechanical stops. To replace this cylinder, match the 80mm bore, 225mm stroke, 20mm adjustment, PT G3/8 ports, and -S magnet.
With a 225mm stroke, the M20x1.5 rod is robust, but long unsupported strokes still require an external guide to prevent excessive side-loading. For applications requiring the load to be held mechanically without continuous air pressure, consider the AirTAC SAIL (pneumatic lock) or BSAI (clamp-lock) series, as the SAIJ adjuster is not a braking device.
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 SAIJ80AX225-20S FAQ
At an operating pressure of 0.9 MPa, this 80mm bore cylinder provides a push force of 4523N and a pull force of 3681N. It can deliver a maximum force of 513 kgf at 1.0 MPa.
The rear adjusting screw acts as a mechanical stop that allows you to shorten the 225mm nominal stroke by up to 20mm, creating a usable travel window of 205-225mm. It is designed for end-position tuning at commissioning and does not lock the load in place without live air pressure.
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