Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-30
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-30 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 SAIJ63AX275-30
The AirTAC SAIJ63X275-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window down from 275 mm to a minimum of 245 mm. It delivers a robust 1559 N push force at 0.5 MPa, making it well-suited for medium-duty handling tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This specific configuration uses a SUS420J2 stainless steel rod for enhanced corrosion resistance and features PT tapered port threading at the G3/8 air supply. The rear adjustment screw acts purely as a mechanical stop to set the retract end-position during commissioning; it does not lock the load or hold position without live air pressure. For applications requiring true load-holding without continuous air, consider the SAIL or BSAI series.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-30 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-30 |
|---|---|
| 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 SAIJ63AX275-30
| 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 SAIJ63AX275-30 Is Used
Changeover Calibration
Dial in the exact retract position within the 245-275 mm window during product size changeovers without swapping out the entire actuator.
End-Stop Refinement
Use the rear adjustment screw to fine-tune the final end-position during machine commissioning, eliminating the need for external mechanical stops.
Medium Force Positioning
Leverage the 1559 N push force at 0.5 MPa to move and position moderate loads on automated assembly lines with repeatable accuracy.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-30 the Right Cylinder?
Choose this 63 mm bore cylinder when your application requires 1559 N of push force at 0.5 MPa and benefits from a variable end-stop to dial in the exact retract distance during machine setup or product changeover. If your force requirements are lower, stepping down to a 50 mm bore yields 982 N of push force, while stepping up to an 80 mm bore provides 2513 N. The adjustable stroke prevents the need to swap cylinders or add external stopper blocks when refining a 245-275 mm travel window.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 275 mm stroke, and 30 mm adjustment range. Ensure your pneumatic supply uses the G3/8 PT port, and select the Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting interfaces, as SAIJ omits FB, CA, CB, and CR styles. Because the 275 mm stroke is relatively long, an external guide is recommended to prevent excessive side-loading on the piston rod.
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 SAIJ63AX275-30 FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 30 mm. This creates a usable travel window between 245 mm and 275 mm, enabling fine-tuning of the retract end-position without modifying the cylinder mounting.
At a standard operating pressure of 0.5 MPa, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. It can deliver up to 2182 N of push force at 0.7 MPa.
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