Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-30S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 275mm 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
- Stroke275 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-30S
The AirTAC SAIJ63X275-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 245 to 275 mm. Delivering 1559 N of pull force at 0.5 MPa, it handles robust actuation while allowing you to dial in the exact retract distance during commissioning. The -S designation means it includes a magnet for position sensing.
This model features an SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and uses PT tapered port threads with a G3/8 connection. You can fine-tune the end position by up to 30 mm without swapping hardware or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides, seamlessly accommodating AirTAC CMSE reed and DMSE electronic solid-state switches.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-30S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 275 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 SAIJ63AX275-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×275 | 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 SAIJ63AX275-30S Is Used
Product Changeovers
Dial in the 245-275 mm travel window during format size changes on packaging lines without physically swapping the cylinder.
End-Stop Calibration
Fine-tune the retract position during machine commissioning to achieve precise end-of-stroke positioning without external stops.
Variable Assembly Stops
Adjust the stroke limit on the fly for assembly stations handling multiple part lengths within the 30 mm trim range.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-30S the Right Cylinder?
Select this 63 mm bore cylinder when you need 1559 N pull force at 0.5 MPa but require variable end-stops for product changeovers. If your application demands less force, stepping down to a 50 mm bore yields 825 N pull. If you need more power, an 80 mm bore provides 2268 N. Because the stroke is 275 mm, ensure adequate external guiding to prevent excessive side-loading on the rod.
The rear adjuster acts purely as a mechanical stop to set the travel limit; it does not lock the load. For applications requiring position holding without live air pressure, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock. This SAIJ variant supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, omitting FB, CA, CB, and CR options.
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 SAIJ63AX275-30S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of pull force and 2182 N of push force. It reaches a maximum push force of 2805 N at 0.7 MPa.
The rear adjuster screw allows you to shorten the 275 mm nominal stroke by up to 30 mm, creating a usable travel window of 245 to 275 mm. This stopper sets the travel end but does not lock the load without live air.
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