Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-20
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-20 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 SAIJ63AX180-20
The AirTAC SAIJ63X180-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the effective travel. With a 180mm nominal stroke and a 20mm adjustment range, it provides a 160-180mm usable travel window. This allows precise end-position tuning at commissioning without swapping the cylinder or adding external stops. In the 63mm bore class, it delivers 1559N of pull force and 2182N of push force at 0.7MPa.
This model features an SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of switches. It uses a PT tapered G3/8 port and supports operating speeds of 30-800mm/s. The rear adjuster acts purely as a mechanical stop to set the travel end and does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-20 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-20 |
|---|---|
| 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 SAIJ63AX180-20
| 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 SAIJ63AX180-20 Is Used
Machine Changeover
Dial in the exact 160-180mm end-position during product size changes on a packaging line without replacing hardware.
Variable End-Stops
Fine-tune the retract distance during assembly station commissioning to accommodate varying part dimensions.
Material Handling
Adjust the pusher travel window on the fly to suit different package sizes on a sorting conveyor.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-20 the Right Cylinder?
Choose this 63mm bore cylinder when an application requires 1559N pull force at 0.5MPa; step down to a 50mm bore (825N pull) for lighter loads, or up to an 80mm bore (2268N pull) for heavier requirements. The adjustable 160-180mm stroke is ideal for machine setups requiring variable end-stops during product changeovers. For load-holding without continuous air pressure, use an SAIL air-released lock, a BSAI clamp-lock, or an external rod lock, as the SAIJ adjuster is only a travel stop.
This cylinder is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets. To match this ISO 15552 replacement, specify: 63mm bore, 180mm stroke, 20mm adjustment, PT G3/8 port, and no magnet. The 20mm rod thread (M16x1.5) handles moderate side loads well, though long unsupported strokes still require an external guide.
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 SAIJ63AX180-20 FAQ
At 0.5MPa it provides 2182N push and 1559N pull force. At 0.7MPa, the push force increases to 2182N and pull to 1402N.
A rear adjusting screw acts as a mechanical stopper, allowing you to shorten the 180mm nominal stroke by up to 20mm, creating a 160-180mm usable travel window. It sets the travel end but does not lock the load.
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