Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-100
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-100 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 SAIJ63AX225-100
The AirTAC SAIJ63X225-100 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a substantial 1559N push force at 0.5 MPa and features a wide usable travel window of 125 to 225 mm, letting you dial back the nominal stroke by up to 100 mm during commissioning. This wide adjustment range is ideal for product changeovers on a packaging line, as you can fine-tune the retract end-position without swapping the cylinder or adding external stops.
This SKU is built with a SUS420J2 stainless steel rod for enhanced corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, though this specific configuration omits the internal magnet, meaning electronic DMSE or reed CMSE switches cannot be fitted. The rear screw acts purely as a travel stop to set deceleration, not as a lock, so live air must be maintained to hold a load.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-100 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-100 |
|---|---|
| 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 SAIJ63AX225-100
| 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 SAIJ63AX225-100 Is Used
Machine Changeover
Dial in the retract position by up to 100 mm when switching between product lengths on a conveyor line, avoiding the need to physically swap cylinders or reposition hard stops.
Variable End-Stop Setup
Perfect for applications requiring a precise end-of-stroke touchpoint that can be fine-tuned on the factory floor during commissioning to perfect the timing of a mechanism.
Corrosion-Resistant Actuation
The SUS420J2 stainless steel rod provides added protection against moisture and environmental exposure, making it suitable for manufacturing environments requiring higher rust prevention.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-100 the Right Cylinder?
Choose this 63 mm bore when an application requires around 1559N push force at 0.5 MPa, stepping up from a 50 mm bore that yields 982N, or down from an 80 mm bore delivering 2513N. An adjustable stroke is preferred over a fixed SAI cylinder when you need a variable end-stop to accommodate multiple product sizes on the same machine. If you need to hold the load statically without continuous air pressure, the rear adjuster here will not act as a brake; you should instead select an SAIL (air-released lock) or BSAI (clamp-lock) cylinder. To match this ISO 15552 replacement, verify the 225 mm stroke, 100 mm adjustment range, G3/8 PT ports, and the SUS420J2 rod material.
Because the 225 mm stroke exceeds the 300 mm threshold requiring an external guide, the 20 mm rod diameter and M16x1.25 rod thread provide a robust interface, but long unsupported strokes still necessitate external guidance to prevent side-load damage.
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 SAIJ63AX225-100 FAQ
At a standard operating pressure of 0.5 MPa, this 63 mm bore cylinder generates 1559N of push force and 1402N of pull force. At the maximum operating pressure of 1.0 MPa, it can deliver up to 318 kgf.
The rear adjuster screw allows you to shorten the effective stroke from the nominal 225 mm down to as little as 125 mm, providing a 100 mm adjustable window. It functions as a mechanical stop to set the end position and does not lock the load without live air pressure.
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