Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-40 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 SAIJ80AX225-40
The AirTAC SAIJ80X225-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 40 mm, creating a usable window of 185-225 mm. Delivering 2513 N of push force and 2268 N of pull force at 0.5 MPa, it fits perfectly into medium-to-high load pneumatic setups. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position feedback integration.
This variant uses a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. It features PT tapered port threads (G3/8) and operates at speeds of 30-800 mm/s. The rear adjuster acts purely as a mechanical stop to fine-tune the end position at commissioning without swapping the cylinder, but it does not hold the load dynamically without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-40 |
|---|---|
| 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 SAIJ80AX225-40
| 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 SAIJ80AX225-40 Is Used
Machine Changeover
Dial in the 185-225 mm travel window during product size changes without physically swapping the cylinder or adding external shims.
End-Position Tuning
Fine-tune the retract end-stop during commissioning to perfectly align tooling, compensating for mechanical tolerances on the fly.
Variable Stops on Conveyors
Use the rear adjuster to set precise reject or positioning endpoints for varying package lengths on a shared pneumatic line.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX225-40 the Right Cylinder?
Choose this 80 mm bore if your application requires pushing or pulling forces around 2513 N at 0.5 MPa. If your load is lighter, stepping down to a 63 mm bore yields 1559 N of push force, whereas stepping up to a 100 mm bore provides 3927 N. The 40 mm adjustable window is ideal for product changeovers where the exact end-of-stroke position varies slightly, saving you from machining external stops or buying a fixed-stroke SAI cylinder for every product size.
Because this is a 225 mm stroke, the 25 mm rod and M20x1.5 thread provide robust support, but long unsupported loads still require an external guide to prevent side-loading damage. If your process requires the load to be held in place without continuous live air, note that the SAIJ rear stop and air cushions are not a locking mechanism; you would need to specify an SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead. To replace an ISO 15552 cylinder, match the 80 mm bore, 225 mm stroke, 40 mm adjustment, PT G3/8 port, and mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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 SAIJ80AX225-40 FAQ
At 0.5 MPa operating pressure, the 80 mm bore generates 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 4523 N of push force.
The rear adjuster screw lets you shorten the 225 mm nominal stroke by up to 40 mm, providing a usable travel window of 185-225 mm. It functions as a mechanical end-stop for fine-tuning and is not a lock that holds the load without air pressure.
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