Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-40S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-40S 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 SAIJ63AX280-40S
The AirTAC SAIJ63X280-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 280 mm stroke that can be fine-tuned backward by up to 40 mm, creating a precise 240-280 mm usable travel window. Delivering 1559 N of pull force at 0.5 MPa, it handles mid-range automation tasks with ease.
This variant features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for position sensing. The extruded aluminum barrel incorporates sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic solid-state switches. It uses a PT tapered G3/8 port and relies on a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-40S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-40S |
|---|---|
| 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 SAIJ63AX280-40S
| 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 SAIJ63AX280-40S Is Used
Product Changeover
Dial in the 240-280 mm travel window during format size changes on packaging lines, using the rear screw to set new end positions rapidly.
Machine Setup
Fine-tune the retraction point at commissioning without adding external mechanical stops, ensuring precise tool alignment.
Variable End Stops
Accommodate multiple part sizes on a single conveyor station by adjusting the stroke limit up to 40 mm as needed.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX280-40S the Right Cylinder?
Choose this 63 mm bore when you need 1559 N pull force at 0.5 MPa, stepping up from a 50 mm bore (825 N pull) or down from an 80 mm bore (2268 N pull). The adjustable stroke is selected over a fixed SAI cylinder when your application requires variable end-stops or on-the-fly commissioning tweaks without swapping hardware. Because the stroke is 280 mm, ensure external guide rails are used to support the load and minimize side-load wear on the M16x1.5 rod thread.
To match this ISO 15552 dimensionally interchangeable cylinder, specify: 63 mm bore, 280 mm stroke, 40 mm adjustment, PT G3/8 port, the desired mounting style, and the -S magnet. Remember that the rear adjuster acts only as a travel stop, not a lock; the cylinder will not hold its position without live air. For load-holding requirements, consider the SAIL or BSAI series instead.
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 SAIJ63AX280-40S FAQ
At 0.5 MPa, this 63 mm bore cylinder provides 1559 N of pull force and 2182 N of push force. At 0.7 MPa, the push force increases to 2805 N.
The rear adjuster screw allows you to shorten the effective travel from the nominal 280 mm down to 240 mm. This stopper only sets the end position and does not lock the load without live air pressure.
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