Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X80-50S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X80-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 80mm 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
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X80-50S
The AirTAC SAIJ63X80-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 80 mm stroke that can be dialed back by up to 50 mm, creating a highly flexible 30-80 mm usable travel window for precise end-position tuning. Delivering 1559 N of pull force at 0.5 MPa, it handles robust actuation tasks while featuring a carbon steel rod and a magnetic piston for position sensing.
This adjustable-stroke design allows you to fine-tune the retract position at commissioning or during product changeovers without swapping the cylinder or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic switches. The rear adjuster functions strictly as a travel stop to set the end position, not as a lock, meaning it will not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X80-50S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X80-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 80 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 SAIJ63X80-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×80 | 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 SAIJ63X80-50S Is Used
Variable End-Stop Positioning
Dial in the exact retract distance within the 30-80 mm window during machine setup to accommodate different material thicknesses without mechanical rework.
Product Size Changeover
Quickly adjust the stroke end-position on packaging lines when switching between different container sizes, minimizing downtime between production runs.
Commissioning Fine-Tuning
Trim the effective travel by up to 50 mm on-site to perfectly align tooling and prevent mechanical interference without replacing the actuator.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X80-50S the Right Cylinder?
Choose this 63 mm bore when you need significant force, such as the 1559 N pull at 0.5 MPa, combined with highly variable end-stop positioning. If your application requires less force, stepping down to a 50 mm bore yields 825 N of pull, whereas moving up to an 80 mm bore provides 2268 N. The integrated 50 mm adjustment range is ideal for machines that process varying product sizes, replacing the need for fixed-stroke SAI cylinders when exact travel distances fluctuate.
For a direct ISO 15552 replacement match, ensure the 63 mm bore, 80 mm nominal stroke, 50 mm adjustment, PT tapered port thread, and magnetic piston (-S) align with your mounting footprint. SAIJ supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. Because the rear screw is a stop and not a locking mechanism, applications requiring load-holding without live pressure should utilize an external rod lock or pilot-operated check valve.
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 SAIJ63X80-50S FAQ
It features a rear adjusting screw that acts as a mechanical stop, allowing you to shorten the 80 mm nominal stroke by up to 50 mm. This provides a usable travel window of 30-80 mm, which can be fine-tuned during commissioning without adding external stops.
At 0.5 MPa operating pressure, this double-acting cylinder provides 1559 N of pull force and 2182 N of push force. It operates at speeds between 30-800 mm/s and includes a magnetic piston for CMSE or DMSE sensors.
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