Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-50S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 180mm 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
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-50S
The AirTAC SAIJ63X180-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 130 to 180 mm. Delivering 1559 N of push force at 0.5 MPa, it is equipped with a SUS420J2 stainless steel rod and a built-in magnet for position sensing. The PT tapered port threads ensure a tight, reliable pneumatic connection.
This adjustable-stroke design allows you to fine-tune the retract end position during commissioning without adding external stops or swapping the cylinder. The rear adjuster acts purely as a travel stop, not a lock, so live air is required to hold the load. For load-holding without air pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-50S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 180 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 SAIJ63AX180-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×180 | 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 SAIJ63AX180-50S Is Used
Product Changeover
Quickly dial in the 130-180 mm stroke window during format changes on a packaging line without replacing hardware.
End-Stop Calibration
Fine-tune the retract position during machine commissioning to achieve precise mechanical alignment.
Variable Positioning
Accommodate multiple part sizes on a single conveyor system by adjusting the rear stopper as needed.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-50S the Right Cylinder?
Choose this 63 mm bore when you need more thrust than a 50 mm cylinder (982 N push at 0.5 MPa) but want to avoid the larger footprint of an 80 mm bore (2513 N). The 50 mm adjustment range is ideal for machines handling frequent product changeovers, letting you dial in the exact end-stop on the fly rather than machining fixed spacers. To replace an ISO 15552 cylinder, match the 63 mm bore, 180 mm stroke, PT port, and the -S magnet requirement.
Although the 20 mm rod diameter handles standard side loads well, an 180 mm stroke still requires external guiding for heavy or off-center loads. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. The integrated magnet works seamlessly with AirTAC CMSE reed and DMSE electronic sensors.
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 SAIJ63AX180-50S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. It can reach up to 2182 N push force at 0.7 MPa.
The rear adjuster allows you to shorten the nominal 180 mm stroke by up to 50 mm, providing an effective travel range of 130 to 180 mm. It functions as a mechanical stop and does not lock the load without live air pressure.
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