Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-50 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 SAIJ63AX225-50
The AirTAC SAIJ63X225-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 175-225 mm usable travel window from its 225 mm nominal stroke. Delivering 1559 N of push thrust at 0.5 MPa, it handles robust actuation while allowing you to dial in the exact retract position during commissioning without adding external stops. The barrel utilizes an extruded aluminum profile with sensor grooves on both sides.
This configuration incorporates a SUS420J2 stainless steel piston rod for enhanced corrosion resistance and uses PT tapered port threads. The rear adjuster functions strictly as a travel stop to set the end position; it does not lock or hold the load without live air pressure. For load-holding requirements, an external rod lock or related AirTAC series like SAIL or BSAI is required.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-50 |
|---|---|
| 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 SAIJ63AX225-50
| 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 SAIJ63AX225-50 Is Used
Machine Changeover
Dial in the 175-225 mm travel window during product size transitions to set new retract endpoints without physically swapping cylinders.
End-Position Tuning
Fine-tune the final retract stop during commissioning to absorb mechanical tolerances and achieve precise end-of-stroke positioning.
Assembly Line Calibration
Adjust the rear stopper on the fly to calibrate pressing or forming operations across varying material thicknesses.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-50 the Right Cylinder?
Select this 63 mm bore unit when your application demands 1559 N of push force at 0.5 MPa and requires precise retract-position tuning. If your force requirements are lower, stepping down to a 50 mm bore yields 982 N of push thrust. The 50 mm adjustment range is ideal for product changeovers on a line, providing a wide tuning band without swapping the cylinder. Mounting options include the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2. This SKU omits the FB, CA, CB, and CR mounts found on some fixed-stroke variants.
Since this is a 225 mm stroke, it remains under the 1500 mm maximum standard stroke limit for this bore, meaning it is a standard length. However, any stroke of 300 mm or more requires an external guide to prevent excessive side loading on the piston rod. This non-magnet version omits the -S suffix, so position sensing via CMSE reed or DMSE electronic switches is not supported without a model change.
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 SAIJ63AX225-50 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push thrust and 1402 N of pull thrust. It operates at a speed range of 30-800 mm/s.
The rear adjuster screw allows you to shorten the effective stroke by up to 50 mm, creating a usable travel window of 175 to 225 mm. The adjuster acts as a mechanical stop to set the end position and does not function as a lock or brake.
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