Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-30
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 350mm 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
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-30
The AirTAC SAIJ63X350-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel between 320 and 350 mm. It delivers a robust 1559 N pull force at 0.5 MPa, making it well-suited for mid-range automation tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This SKU utilizes a SUS420J2 stainless steel piston rod for enhanced corrosion resistance and features PT tapered port threads (G3/8) for a tight pneumatic connection. The rear adjuster acts purely as a mechanical stop to dial in the end position during commissioning; it does not lock or hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-30 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 350 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 SAIJ63AX350-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×350 | 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 SAIJ63AX350-30 Is Used
Machine Changeover
Dial in the 320-350 mm travel window during product size transitions to set new end stops rapidly without swapping out the physical cylinder.
End-Position Tuning
Fine-tune the retract stroke at commissioning to absorb mechanical tolerances, ensuring precise seating of components without external shims.
Variable Stops
Adjust the rear stopper on the fly to alter the pusher distance on a packaging line, accommodating different carton lengths efficiently.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-30 the Right Cylinder?
Select this 63 mm bore cylinder when your application requires precise end-position tuning without adding external stops, delivering a 1559 N pull force at 0.5 MPa. If you need less force, stepping down to a 50 mm bore yields 825 N pull, while moving up to an 80 mm bore provides 2268 N. For load-holding without continuous air pressure, this plain SAIJ is insufficient; consider the SAIL or BSAI series instead.
Because the 350 mm stroke is relatively long, the 20 mm diameter rod requires external guiding to prevent excessive side-loading and premature seal wear. As a dimensionally interchangeable ISO 15552 cylinder, it uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and operates at speeds of 30-800 mm/s.
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 SAIJ63AX350-30 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of pull force and 2182 N of push force. It can reach a maximum push force of 2805 N at 0.9 MPa.
The rear adjuster screw lets you mechanically shorten the nominal 350 mm stroke by up to 30 mm, providing a usable travel window of 320 to 350 mm. This stopper only sets the end position; it does not lock or hold the load without live air pressure.
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