Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 400mm 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
- Stroke400 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-40
The AirTAC SAIJ63X400-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 360-400 mm usable travel window. It delivers 1559 N of pull force at 0.5 MPa and uses a G3/8 port paired with variable air cushions at both ends to manage kinetic energy.
This SKU is configured with an SUS420J2 stainless steel rod for superior corrosion resistance and utilizes PT tapered port threads. The extruded aluminum barrel includes dual sensor grooves, allowing you to drop in CMSE reed or DMSE electronic sensors exactly where needed without external brackets.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 400 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 SAIJ63AX400-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×400 | 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 SAIJ63AX400-40 Is Used
Machine Changeover
Dial in the 360-400 mm retract position precisely when switching production lines to a different pallet size, bypassing the need for mechanical spacer refits.
Variable End-Stop Diverter
Adjust the stroke on the fly to push varying product lengths onto diverter chutes without repositioning the entire cylinder assembly.
Press Fit Tuning
Fine-tune the bottoming-out position during assembly commissioning to accommodate stack tolerances and ensure consistent insertion depth.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-40 the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore falls short on thrust—stepping up from the 50 mm bore (which yields 825 N pull at 0.5 MPa) provides the necessary force margin for heavier fixtures. The 40 mm rear adjuster lets you dial in the exact retract end-position during commissioning or product changeover without swapping the cylinder or adding external stopper blocks.
Because the nominal 400 mm stroke is relatively long, an external guide is recommended to prevent rod sag and excessive side-loading on the M16x1.5 rod thread. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For true fail-safe load holding, select the SAIL or BSAI series. This model is dimensionally interchangeable per ISO 15552 mounting interfaces.
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 SAIJ63AX400-40 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of pull force and 2182 N of push force at 0.7 MPa. The maximum operating pressure is 1.0 MPa.
The external rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective stroke from 400 mm down to 360 mm. It only sets the travel end position and does not lock the load without live air pressure.
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