Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX240-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX240-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 240mm 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
- Stroke240 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX240-40
The AirTAC SAIJ63X240-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 240 mm nominal travel by up to 40 mm. This creates a precise 200-240 mm usable window, enabling fine end-position tuning at commissioning without swapping the cylinder or adding external stops. It delivers 1559 N of pull force at 0.5 MPa and 2182 N of push force at 0.7 MPa.
This SKU is built with a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and features PT tapered port threads with a G3/8 connection. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. The rear adjuster acts purely as a mechanical stop to set the travel end and does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX240-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX240-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 240 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 SAIJ63AX240-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×240 | 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 SAIJ63AX240-40 Is Used
Machine Changeover
Quickly adapt end positions for different product sizes on a packaging line without physically replacing the cylinder or bolting on external stops.
End-Position Tuning
Fine-tune the 200-240 mm travel window during commissioning to achieve exact seating forces and prevent mechanical jamming.
Variable Diverter Stops
Adjust the retract stop on the fly to handle varying package lengths on a conveyor system, ensuring accurate routing.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX240-40 the Right Cylinder?
Choose this 63 mm bore when you need a robust mid-range force profile, delivering 1559 N pull at 0.5 MPa. If your application requires less force, step down to the 50 mm bore (825 N pull at 0.5 MPa); for heavier loads, step up to the 80 mm bore (2268 N pull). The adjustable stroke is ideal for machine setups requiring variable end stops or product-size changeovers, providing flexibility that a fixed-stroke SAI cylinder cannot offer.
Because the nominal stroke is 240 mm, ensure adequate guidance to prevent excessive side loading on the rod. This cylinder is dimensionally interchangeable per ISO 15552 and supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). For load-holding without live air pressure, consider the SAIL or BSAI series instead of relying on the rear stopper.
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 SAIJ63AX240-40 FAQ
At 0.5 MPa, this 63 mm bore cylinder provides 1559 N of pull force and 1559 N of push force. At 0.7 MPa, the push force increases to 2182 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 40 mm from the 240 mm nominal length, providing a usable travel window of 200-240 mm. The adjuster acts as a mechanical stop and does not function as a lock.
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