Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-50S 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 SAIJ80X225-50S
The AirTAC SAIJ80X225-50-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 a carbon steel rod and a PT tapered port. Because of the 50mm adjustment code, you can dial the effective travel back from its 225mm nominal length, providing a usable 175-225mm positioning window. This built-in flexibility allows precise end-position tuning at commissioning without swapping the cylinder or adding external stops.
This model includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors, which seat neatly into the sensor grooves on both sides of the extruded aluminum barrel. The rear screw acts purely as a travel stop to set the retract end position and relies on the variable air cushion for deceleration; it does not hold the load without live air. For load-holding requirements without continuous pressure, consider the SAIL or BSAI series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-50S |
|---|---|
| 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 SAIJ80X225-50S
| 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 SAIJ80X225-50S Is Used
Changeover Adjustments
Dial in the 175-225mm travel window during product size changeovers to set new retract positions without physically swapping the actuator.
End-Position Tuning
Fine-tune the final retract position at machine commissioning using the rear stopper, avoiding the need to bolt on external spacers.
Assembly Line Actuation
Leverage the 2513N push force at 0.5 MPa for heavy pushing operations while relying on the 36mm cushion to smoothly stop the load.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-50S the Right Cylinder?
Choose this 80mm bore when an application demands more thrust than a 63mm cylinder (1559N at 0.5 MPa) but less than a 100mm bore (3927N at 0.5 MPa). The adjustable stroke is ideal for product-size changeovers on a line, letting operators fine-tune the retract end-stop on the fly instead of machining new hard stops. Since the nominal stroke is 225mm, an external guide is recommended to manage side loads on the 25mm rod over longer extensions.
To match this ISO 15552 interchangeable cylinder for a replacement, verify the 80mm bore, 225mm stroke, 50mm adjustment range, PT port thread, and the -S magnet option. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. Operating speed ranges from 30-800 mm/s.
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 SAIJ80X225-50S FAQ
The rear adjuster lets you shorten the 225mm nominal stroke by up to 50mm, creating a usable travel window of 175-225mm. The adjuster acts as a mechanical stop for the retract end position and does not lock the load without live air pressure.
At 0.5 MPa operating pressure, it provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
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