Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-75 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 SAIJ80X225-75
The AirTAC SAIJ80X225-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features an extruded aluminum barrel with sensor grooves on both sides and delivers 2513N of push force at 0.5 MPa. By turning the external stopper screw, you achieve a usable travel window of 150-225mm, allowing precise end-position tuning without swapping hardware.
This 80mm bore unit uses a 25mm carbon steel rod and a PT G3/8 port. The rear adjuster acts purely as a travel stop for product changeovers and does not lock the load without live air. It includes variable air cushions at both ends and supports a speed range of 30-800mm/s.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-75 |
|---|---|
| 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 SAIJ80X225-75
| 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 SAIJ80X225-75 Is Used
Product Changeovers
Dial in the 150-225mm travel window during format changes on packaging lines, using the rear screw to set new end positions without changing the cylinder.
End-Stop Calibration
Fine-tune the retraction point during machine commissioning to prevent mechanical crashes, relying on the 75mm adjustment range to find the exact contact point.
Variable Length Sorting
Actuate diverter gates on conveyors handling different package sizes, adjusting the stroke on the fly to accommodate varying product dimensions.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X225-75 the Right Cylinder?
Select this 80mm bore cylinder when an application requires substantial thrust, stepping up from a 63mm bore that provides 1559N push force at 0.5 MPa. The 75mm adjustment range is ideal for machinery processing varying product lengths, enabling rapid changeovers. For fixed-position tasks without variance, a standard SAI cylinder is simpler. Because this unit lacks a magnet, it cannot host CMSE or DMSE sensors.
As a dimensionally interchangeable ISO 15552 cylinder, it mounts via Basic, FA, LB, TC, FTC, TCM1, or TCM2 brackets, omitting FB and CA styles. Note that the rear stopper only decelerates the piston; it cannot hold loads pneumatically. For dead-load holding, consider a SAIL or BSAI variant. Given the 225mm stroke, ensure external guides support any heavy lateral loads.
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 SAIJ80X225-75 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from the nominal 225mm down to 150mm. It sets the travel end but does not lock the load without continuous air pressure.
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