Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-30S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 280mm 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
- Stroke280 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-30S
The AirTAC SAIJ63X280-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 250-280mm from its 280mm nominal stroke. It delivers a robust 2182N push force at 0.7MPa, utilizing a G3/8 port and a 20mm piston rod with an M16x1.5 thread. This variant features a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and includes a built-in magnet (-S) for seamless position sensing.
Unlike fixed-stroke alternatives, this model allows you to fine-tune the retract end-position at commissioning without swapping the barrel or adding external stops. The rear adjuster acts purely as a travel stop for the air cushion, meaning it will not hold the load without live air pressure; for true drop-prevention, a SAIL or BSAI locking cylinder is required. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-30S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 280 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 SAIJ63AX280-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×280 | 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 SAIJ63AX280-30S Is Used
Machine Setup & Changeover
Dial in the exact 250-280mm retract position during commissioning or product size transitions without physically replacing the cylinder or adding external stopper blocks.
Variable End-Stop Positioning
Use the 30mm rear adjustment screw to fine-tune the end of stroke, accommodating multiple product sizes on a single conveyor line with rapid tooling adjustments.
Sensor-Ready Automation
Leverage the integrated -S magnet with CMSE reed and DMSE electronic sensors to confirm retract positions across the adjusted travel window in automated assembly lines.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-30S the Right Cylinder?
Choose this 63mm bore when a 50mm bore (offering 1374N push at 0.5MPa) lacks the necessary thrust, but an 80mm bore (3518N at 0.7MPa) is physically oversized. The 30mm adjustment range is ideal for product changeovers where end-of-stroke positions vary slightly. Because the 280mm stroke exceeds 300mm? No, but even at 280mm, ensuring adequate external guidance is recommended to prevent side-load wear on the M16x1.5 rod thread. For a direct ISO 15552 replacement, match the 63mm bore, 280mm stroke, 30mm adjust, PT tapered port threads, and the -S magnet requirement.
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 SAIJ63AX280-30S FAQ
The rear adjuster allows you to shorten the effective stroke by up to 30mm, creating a 250-280mm usable travel window. It acts as a mechanical stop for the air cushion and does not lock the position without continuous air pressure.
At a 0.7MPa operating pressure, the SAIJ63X280-30-S provides a push force of 2182N and a pull force of 1402N. It can deliver up to 318kgf at its maximum 1.0MPa pressure limit.
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