Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-100
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-100 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 SAIJ63AX400-100
The AirTAC SAIJ63X400-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 400 mm travel back by up to 100 mm. This yields a precise 300-400 mm usable window, enabling fine end-position tuning at commissioning without swapping the cylinder or adding external stops. It delivers 1559 N of push thrust at 0.5 MPa and utilizes a SUS420J2 stainless steel rod for enhanced corrosion resistance.
The extruded aluminum barrel includes sensor grooves on both sides, though this non-magnet variant does not support position sensing. You can fine-tune the travel end using the rear screw and the integrated variable air cushions, but note that the adjuster acts as a mechanical stop and does not hold the load without live air pressure. The G3/8 PT port and M16x1.5 rod thread ensure robust pneumatic connections and high side-load capacity.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-100 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-100 |
|---|---|
| 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 SAIJ63AX400-100
| 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 SAIJ63AX400-100 Is Used
Variable End-Stop Tuning
Dial in the exact 300-400 mm travel distance during machine commissioning to accommodate different material thicknesses without installing external mechanical stops.
Product Changeover
Quickly adjust the retract position on packaging or processing lines when switching to a new product size, minimizing downtime and maximizing line flexibility.
Long-Stroke Assembly
Utilize the 400 mm reach for extended linear movements in automated assembly stations, relying on the built-in air cushions to decelerate the load smoothly.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-100 the Right Cylinder?
Choose this 63 mm bore when you need the 1559 N push force at 0.5 MPa and a highly flexible travel window for product changeovers. If your application requires less force, stepping down to a 50 mm bore provides 982 N, while stepping up to an 80 mm bore yields 2513 N. Because the stroke is 400 mm, the long unsupported rod means you must use an external guide to prevent excessive side-loading and premature wear.
Select this adjustable SAIJ model over a fixed SAI when your machine setup requires variable end-stops without mechanical rebuilds. For load-holding without live pressure, this cylinder is insufficient as the rear adjuster is only a stop; consider an external pilot-operated check valve or the AirTAC SAIL lock cylinder. To match this ISO 15552 replacement exactly, specify the 63 mm bore, 400 mm stroke, 100 mm adjustment, G3/8 PT port, and your required mounting from the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, or TCM2.
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 SAIJ63AX400-100 FAQ
At an operating pressure of 0.5 MPa, the 63 mm bore provides 1559 N of push thrust and 1402 N of pull thrust. At the maximum pressure of 1.0 MPa, it delivers up to 318 kgf.
The rear adjuster acts as a mechanical stop that shortens the effective travel from the 400 mm nominal stroke. This creates a 300-400 mm adjustable window, allowing you to fine-tune the retract end position without replacing the cylinder.
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