Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-30
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 145mm 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
- Stroke145 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-30
The AirTAC SAIJ63X145-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the end position during commissioning without adding external stops. Based on a 145 mm nominal stroke and a 30 mm adjustment screw, it provides an effective usable travel window of 115 to 145 mm. In the 63 mm bore class, it generates 1559 N of push force and 1402 N of pull force at 0.5 MPa, making it well-suited for medium-duty positioning tasks.
This variant features a SUS420J2 stainless steel rod (material code A) for enhanced resistance to corrosion and surface wear. The extruded aluminum barrel incorporates sensor grooves on both sides for flexibility, though this specific SKU is configured without a magnet. Pneumatic connections use PT tapered port threads (G3/8), and the standard variable air cushions at both ends work alongside the rear adjuster to decelerate the piston at the end of its travel.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-30 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 145 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 SAIJ63AX145-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×145 | 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 SAIJ63AX145-30 Is Used
Machine Changeover
Dial in the exact retraction end-stop from 115 to 145 mm during product size changeovers without physically swapping the cylinder or adding external stopper blocks.
End-Position Tuning
Fine-tune the final resting position at machine commissioning to perfect a pressing or clamping operation, absorbing mechanical tolerances directly at the rear screw.
Variable Assembly Stops
Adapt the retract distance on the fly for assembly lines handling slightly different part heights, using the 30 mm adjustment range to alter the stroke window.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX145-30 the Right Cylinder?
Choose this 63 mm bore adjustable cylinder when your application requires precise end-position tuning within a 115 to 145 mm travel window, offering 1559 N push force at 0.5 MPa. If you need less force, stepping down to a 50 mm bore yields 982 N push force, while stepping up to an 80 mm bore provides 2513 N. The adjustable stroke is ideal for product changeovers on a line, allowing you to dial in the exact retraction stop without swapping out the entire cylinder body.
For an exact ISO 15552 replacement, match the 63 mm bore, 145 mm stroke, 30 mm adjustment range, PT G3/8 port, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), noting that FB, CA, CB, and CR mounts are omitted. Because the 145 mm stroke is relatively short, side-loading stress is minimal, but you should still ensure proper alignment to protect the M16x1.5 rod thread. Remember that the rear adjuster functions strictly as a travel stop to set the end position, not as a lock; if you need to hold a load without live air pressure, consider the SAIL (air-released lock) or BSAI (clamp-lock) series instead.
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 SAIJ63AX145-30 FAQ
It features a rear adjusting screw that acts as a mechanical stop, allowing you to shorten the effective travel from the 145 mm nominal stroke down to 115 mm, creating a 30 mm usable adjustment window for fine-tuning the end position.
At an operating pressure of 0.5 MPa, the SAIJ63X145-30 generates 1559 N of push force on the forward stroke and 1402 N of pull force on the return stroke.
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