Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-30
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-30 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 SAIJ63AX280-30
The AirTAC SAIJ63X280-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 250 to 280 mm during commissioning. It delivers a robust 2182 N push force at 0.7 MPa, making it well-suited for mid-range industrial actuation. The extruded aluminum barrel includes sensor grooves on both sides for flexible positioning of CMSE reed or DMSE electronic switches.
This variant uses a SUS420J2 stainless steel rod (option A) for improved corrosion resistance compared to standard carbon steel. The rear adjuster functions strictly as a travel stop to dial in the end position without swapping the cylinder, while the variable air cushions at both ends manage end-of-stroke deceleration. Neither the adjuster nor the cushion holds the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-30 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-30 |
|---|---|
| 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 SAIJ63AX280-30
| 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 SAIJ63AX280-30 Is Used
Machine Changeover
Dial in the 250-280 mm travel window during product size changes to set exact end positions without adding external mechanical stops.
Assembly End-Stop
Leverage the 2182 N push force at 0.7 MPa to press or position components, using the rear screw to fine-tune the final resting point.
Diversion Setup
Adjust the actuation length on the fly to accommodate different package sizes on a sorting line, ensuring precise physical contact.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-30 the Right Cylinder?
Choose this 63 mm bore if you need higher thrust than the 50 mm option (1374 N push at 0.7 MPa) but want to avoid the bulk of the 80 mm version (3518 N). The 30 mm adjustment window is ideal for product changeovers where exact end-positioning matters, saving the downtime of physically swapping a fixed-stroke SAI cylinder. Because the 280 mm stroke is substantial, always use an external guide to support the load and mitigate side-load stress on the M16x1.5 rod thread. If your application requires true load-holding without continuous air pressure, step up to the SAIL (air-released lock) or BSAI (clamp-lock) series instead of relying on the adjuster. This model is dimensionally interchangeable per ISO 15552 and uses a PT tapered G3/8 port, with mounting options limited to Basic, FA, LB, TC, FTC, TCM1, and 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 SAIJ63AX280-30 FAQ
At a 0.7 MPa operating pressure, this 63 mm bore cylinder generates 2182 N of push force and 1402 N of pull force. It can reach up to 2805 N push at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the nominal 280 mm down to 250 mm. This enables precise end-position tuning at commissioning without replacing the cylinder.
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