Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-30S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-30S 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 SAIJ63AX225-30S
The AirTAC SAIJ63X225-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 195 to 225 mm usable travel window, allowing you to trim the nominal 225 mm stroke by up to 30 mm during commissioning. Delivering 1559 N of push force at 0.5 MPa, it handles mid-range automation tasks with precision.
This variant features a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel incorporates sensor grooves on both sides, and fluid control is managed via PT tapered G3/8 ports.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-30S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-30S |
|---|---|
| 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 SAIJ63AX225-30S
| 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 SAIJ63AX225-30S Is Used
Product Changeover
Dial in the 195-225 mm end position precisely when switching between product sizes on the line, avoiding mechanical rebuilds.
Machine Setup
Fine-tune the retract stroke during initial commissioning to perfectly time the 1559 N thrust delivery without adding external stops.
Variable End Stops
Adjust the travel window on the fly for flexible assembly processes, relying on the rear screw to set the exact 30 mm trim limit.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX225-30S the Right Cylinder?
Select this 63 mm bore cylinder when a 40 mm bore (628 N push at 0.5 MPa) lacks the necessary thrust, but an 80 mm bore (2513 N push at 0.5 MPa) would be excessive. The adjustable 195-225 mm stroke window is ideal for product-size changeovers, eliminating the need to physically swap cylinders or bolt on external stops. For load-holding without live air pressure, note that the rear adjuster functions only as a travel stop, not a lock; you should integrate an external rod lock or pilot-operated check valve instead.
Because the 225 mm stroke exceeds 300 mm is not the case here, side-load concerns are moderate, but always ensure proper guiding for the 20 mm rod. To replace an ISO 15552 cylinder, match the 63 mm bore, 225 mm stroke, 30 mm adjustment, PT G3/8 port, and the -S magnet requirement. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR.
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 SAIJ63AX225-30S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke by up to 30 mm. This creates a 195 to 225 mm usable travel window, but it does not lock the load without live air pressure.
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