Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 950mm 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
- Stroke950 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-50
The AirTAC SAIJ63X950-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 900-950 mm usable travel window. It delivers 1559 N of pull force at 0.5 MPa, making it suitable for medium-duty positioning. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
Unlike a fixed-stroke SAI, the rear stopper screw lets you dial in the exact end position during commissioning without adding external stops. The carbon steel rod and M16x1.5 thread provide robust load transfer, while the PT tapered G3/8 port ensures a tight pneumatic connection.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 950 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 SAIJ63X950-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×950 | 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 SAIJ63X950-50 Is Used
Product Changeover
Dial in the 900-950 mm travel window during format changes without swapping the cylinder or bolting on external stops.
Variable End Stops
Fine-tune the retract position on a long-stroke conveyor diverter to accommodate varying package sizes on the fly.
Machine Setup
Set precise end-of-stroke limits during initial commissioning to perfect a 950 mm maximum travel sequence.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-50 the Right Cylinder?
Choose this 63 mm bore when 50 mm (402 N pull at 0.5 MPa) is too weak but 80 mm (2268 N pull at 0.5 MPa) is oversized. The 50 mm adjustment range is ideal for product changeovers on a line, letting operators shift the end-stop precisely. Because the 950 mm stroke is near the 1500 mm max standard limit, an external guide is recommended to prevent rod side-load damage.
For ISO 15552 interchangeability, match the 63 mm bore, 950 mm stroke, 50 mm adjustment, G3/8 PT port, and mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). The rear adjuster acts only as a travel stop; it does not hold the load without live air. For fail-safe load holding, use an SAIL or BSAI cylinder 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 SAIJ63X950-50 FAQ
It delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa, reaching a maximum of 318 kgf at 1.0 MPa.
A rear stopper screw trims the effective stroke by up to 50 mm, providing a usable travel window of 900-950 mm. It acts as a travel stop and does not lock the load without live air.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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