Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-75
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-75 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 SAIJ63AX280-75
The AirTAC SAIJ63X280-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window between 205 and 280 mm. Delivering a robust 2182 N of push force at 0.7 MPa, it handles demanding workloads while maintaining a standard G3/8 port and M16x1.5 rod thread. The extruded aluminum barrel includes sensor grooves on both sides for straightforward positioning feedback.
This specific SKU utilizes a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance compared to standard carbon steel. The rear adjustment mechanism acts purely as a mechanical stop to dial in the exact end position during commissioning without requiring external stops or cylinder swaps.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-75 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-75 |
|---|---|
| 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 SAIJ63AX280-75
| 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 SAIJ63AX280-75 Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 205-280 mm window during machine commissioning to accommodate different product sizes without swapping cylinders.
Changeover Adjustments
Rapidly modify the stroke length on production lines handling multiple material formats, using the 75 mm adjustment range to adapt stops on the fly.
Assembly Pressing
Leverage the 2182 N push force at 0.7 MPa for pressing and joining operations, using the rear stopper to precisely control insertion depth.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-75 the Right Cylinder?
Choose this 63 mm bore if your application requires a higher force output than the 50 mm version (which provides 1374 N push at 0.7 MPa) but does not need the heavier 80 mm class. The 75 mm adjustment range is ideal for machinery requiring significant product changeover flexibility, allowing you to shift the end-stop dynamically rather than relying on a fixed-stroke SAI cylinder. Because the total stroke is 280 mm, ensure adequate external guiding to prevent excessive rod side-loading on long travels.
When replacing an ISO 15552 cylinder, verify the 63 mm bore, 280 mm stroke, PT tapered port thread, and the required mounting style. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2. Remember that the rear adjuster and air cushions only decelerate the load; they do not hold position without live air pressure. For true load-holding, consider an AirTAC SAIL or BSAI series cylinder.
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 SAIJ63AX280-75 FAQ
At 0.7 MPa operating pressure, this 63 mm bore cylinder generates 2182 N of push force and 1402 N of pull force. The maximum force at 1.0 MPa is 318 kgf.
The rear adjuster acts as an external stopper, allowing you to shorten the effective travel from the nominal 280 mm down to 205 mm. This provides a 75 mm tuning window for precise end-position setting without changing the cylinder.
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