Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X50-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X50-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 50mm 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
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X50-50
The AirTAC SAIJ63X50-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 1559N of push force at 0.5MPa. It features a carbon steel rod and PT tapered ports. Because the 50mm adjustment range matches the nominal stroke, you can dial the effective travel all the way down to a 0-50mm window for highly precise short-stroke movements.
This adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning and does not hold the load without live air. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to easily mount CMSE reed or DMSE electronic switches if needed. It uses a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X50-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X50-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 50 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 SAIJ63X50-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×50 | 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 SAIJ63X50-50 Is Used
Product Changeover
Dial in the exact 0-50mm end-stop during machine format changes without physically replacing the actuator.
Variable End Positioning
Fine-tune the retract distance at commissioning to accommodate varying material thicknesses on the fly.
Short-Stroke Clamping
Utilize the 1559N force for clamping parts where the exact travel distance must be trimmed precisely to the workpiece.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X50-50 the Right Cylinder?
Choose this 63mm bore when you need the 1559N thrust at 0.5MPa but require variable end-stops for frequent product-size changes on a line. If your application needs less force, stepping down to a 50mm bore yields 982N; stepping up to an 80mm bore provides 2513N. The adjustable rear screw lets you trim the travel without swapping the cylinder or adding external stops, unlike a fixed-stroke SAI. Remember that the adjuster is a stop, not a lock, so for load-holding without live air pressure, consider an external rod lock or the SAIL series.
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 SAIJ63X50-50 FAQ
The rear adjuster screw allows you to mechanically shorten the effective travel from its 50mm nominal stroke down to 0mm, creating a 0-50mm usable window. It functions as a hard stop for end-position tuning and is not a lock.
At 0.5MPa operating pressure, it provides 1559N of push force and 1402N of pull force. At 0.7MPa, the push force increases to 2182N.
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