Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 105mm 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
- Stroke105 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-40
The AirTAC SAIJ63X105-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the effective travel. With a 105 mm nominal stroke and a 40 mm adjustment code, it provides a usable 65-105 mm travel window for precise end-position tuning at commissioning. It delivers a robust 1559 N pull force at 0.5 MPa, making it suitable for moderate-to-heavy actuation tasks.
This model is equipped with a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic solid-state switches. The rear adjuster acts purely as a mechanical stop to set the travel end; it does not lock or hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 105 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 SAIJ63AX105-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×105 | 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 SAIJ63AX105-40 Is Used
Machine Changeover
Quickly reconfigure the 65-105 mm travel window during product size changeovers on a packaging line without replacing the cylinder.
End-Stop Tuning
Fine-tune the retract position during commissioning to dial in exact mechanical stops for multi-axis machining fixtures.
Variable Positioning
Adjust the rear stopper on the fly to accommodate different material thicknesses in automated clamping stations.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-40 the Right Cylinder?
Choose this 63 mm bore cylinder when your application requires an exact end-stop that can be fine-tuned on the fly without adding external stops or swapping the cylinder. If your process needs less force, stepping down to a 50 mm bore yields 825 N of pull at 0.5 MPa; if you need more power, an 80 mm bore provides 2268 N. Because the stroke is 105 mm, no external side-load guide is strictly required, but always ensure the load is supported to prevent rod binding.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 105 mm nominal stroke, 40 mm adjustment range, G3/8 port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting interfaces. Note that the SAIJ series omits FB, CA, CB, and CR mounts. For load-holding without continuous air pressure, this cylinder is insufficient; consider the AirTAC SAIL or BSAI series 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 SAIJ63AX105-40 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 318 kgf.
The rear adjuster screw lets you mechanically shorten the 105 mm nominal stroke by up to 40 mm, creating a 65-105 mm usable travel window. It functions as a travel stop and does not hold the load without live air.
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