Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm 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.
- BoreØ63 mm
- Stroke225 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40
The AirTAC SAIJ63X225-40 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 225 mm stroke that can be fine-tuned backward by up to 40 mm, yielding a usable travel window between 185 and 225 mm. In the 63 mm bore class, it delivers a push force of 1559 N and a pull force of 1402 N at 0.5 MPa.
This variant uses a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, allowing direct mounting of CMSE reed and DMSE electronic solid-state switches. As a profile cylinder, it is dimensionally interchangeable per ISO 15552 standards.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 225 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | 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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40 Is Used
Machine Changeover
Dial in the retract stroke from 185 to 225 mm during product size changes without physically swapping the actuator or repositioning external hard stops.
End-Position Tuning
Fine-tune the exact end-of-stroke position at commissioning to compensate for mechanical tolerance stack-up in the fixture assembly.
Variable Forming Stops
Adjust the travel limit on the fly for a press or forming station that handles multiple part lengths within the 40 mm adjustment band.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40 the Right Cylinder?
Select this 63 mm bore cylinder when your application requires 1559 N of push force at 0.5 MPa and demands variable end-stop positioning. The 40 mm adjustment window is ideal for machine changeovers, letting you dial in the exact retract position without swapping cylinders or adding external stops. If you need less force, stepping down to a 50 mm bore yields 982 N push force; stepping up to an 80 mm bore provides 2513 N.
Because the stroke is 225 mm, ensure adequate guidance to prevent excessive side-loading on the rod. The rear adjuster acts strictly as a travel stop and does not hold the load dynamically—maintain live air pressure for positioning. For true load-holding without continuous air, consider the SAIL pneumatic lock or BSAI clamp-lock variants. This SAIJ model supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR mounts.
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 SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-40 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder generates a push force of 1559 N and a pull force of 1402 N. At the maximum rated pressure of 1.0 MPa, it can deliver up to 318 kgf.
The rear adjusting screw acts as a mechanical stopper that shortens the effective travel. For this SAIJ63X225-40, you can trim the 225 mm nominal stroke back by up to 40 mm, providing an adjustable working window of 185 to 225 mm without changing the cylinder itself.
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