Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-100
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-100 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 SAIJ63AX350-100
The AirTAC SAIJ63X350-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 350 mm travel by up to 100 mm, creating a precise 250-350 mm usable window. This built-in mechanical stop lets you fine-tune the retract end position during commissioning or product changeovers without swapping the barrel or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position feedback.
Delivering 1559 N of push force and 1402 N of pull force at 0.5 MPa, this 63 mm bore model is built for robust actuation. It features a SUS420J2 stainless steel piston rod for enhanced durability against surface corrosion and uses a PT tapered port thread for a reliable, tight pneumatic connection. The rear adjuster acts solely as a travel stop to set the end position; it does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-100 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-100 |
|---|---|
| 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 SAIJ63AX350-100
| 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 SAIJ63AX350-100 Is Used
Machine Changeover
Dial in the retract position from 250 to 350 mm instantly when switching product sizes on a packaging line, avoiding manual shim adjustments.
End-Position Tuning
Fine-tune the exact stopping point during commissioning to compensate for mechanical tolerance stack-up without replacing the actuator.
Variable End Stops
Set a precise retract distance for diverter arms or gating mechanisms that must handle varying package lengths on the fly.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX350-100 the Right Cylinder?
Choose this adjustable-stroke variant over a fixed SAI when your application requires variable end-stops or exact end-position tuning at setup. If your force requirements are lower, stepping down to a 50 mm bore yields 982 N of push force at 0.5 MPa. If you need more clamping power, moving up to an 80 mm bore provides 2513 N. Because the 350 mm stroke is relatively long, the 20 mm diameter piston rod will experience side loads, so an external guide is recommended to prevent premature seal wear.
This cylinder is dimensionally interchangeable per ISO 15552 mounting-interface dimensions. It supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. To match this exact configuration, specify a 63 mm bore, 350 mm stroke, 100 mm adjustment, PT port thread, SUS420J2 rod material, and no magnet. For load-holding applications without live air, consider the SAIL or BSAI series, as the rear adjuster here is not a lock.
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 SAIJ63AX350-100 FAQ
It features a rear adjusting screw that acts as a mechanical stop, allowing you to shorten the effective stroke by up to 100 mm. This creates a usable travel window of 250 to 350 mm, which can be fine-tuned during setup without changing the cylinder.
At 0.5 MPa operating pressure, it provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
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