Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-40S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-40S 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 SAIJ63X950-40S
The AirTAC SAIJ63X950-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 910-950 mm usable travel window, allowing you to dial back the 950 mm nominal stroke by up to 40 mm during commissioning without adding external stops. Equipped with a magnetic piston for position sensing, it operates at 30-800 mm/s and generates 1559 N of pull force at 0.5 MPa.
This model uses a carbon steel rod with an M16x1.5 thread and a G3/8 port. It includes adjustable air cushions at both ends to manage impact deceleration. The extruded aluminum barrel integrates sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE solid-state switches for precise end-of-stroke detection.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-40S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-40S |
|---|---|
| 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 SAIJ63X950-40S
| 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 SAIJ63X950-40S Is Used
Machine Changeover
Dial in the 910-950 mm retract position during product size changes without swapping hardware or adding external stopper blocks.
End-Stop Tuning
Fine-tune the final end position at commissioning to absorb mechanical tolerances across long-stroke automated assemblies.
Long-Stroke Assembly
Drive large format jigs or material handling carts with 1559 N pull force, using the adjustable rear stop to set precise travel limits.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X950-40S the Right Cylinder?
Choose this 63 mm bore when an application requires the 1559 N pull force at 0.5 MPa and a variable end-stop. If you need less force, the 50 mm bore offers 825 N of pull, while stepping up to the 80 mm bore provides 2268 N. The adjustable stroke is ideal for product changeovers, letting you fine-tune the retract position on the fly instead of swapping the cylinder for a fixed-stroke SAI variant.
Because the 950 mm stroke is long and unsupported, an external guide is recommended to prevent rod binding and premature wear. Remember that the rear adjuster is a travel stop, not a lock; the SAIJ63X950-40-S will not hold a load without live air pressure. For fail-safe load holding, consider the SAIL or BSAI series. This unit is dimensionally interchangeable per ISO 15552 and uses PT tapered port threads.
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 SAIJ63X950-40S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of pull force and 1559 N of push force. At the maximum 1.0 MPa pressure, it delivers up to 318 kgf.
The rear adjuster acts as a mechanical stop that lets you shorten the 950 mm nominal stroke by up to 40 mm, creating a 910-950 mm usable travel window. It only sets the end position and does not lock the load without live air pressure.
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