Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 260mm 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
- Stroke260 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-50
The AirTAC SAIJ63X260-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel anywhere within a 210 to 260 mm window. Delivering 1559 N of push force at 0.5 MPa, it is built with a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and features PT tapered port threads.
This adjustable-stroke design eliminates the need to swap cylinders or bolt on external stops during product changeovers. The rear screw acts purely as a travel stop to fine-tune the end position, not as a lock, meaning live air is required to hold the load. It supports a standard speed range of 30-800 mm/s and uses the standard SAIJ mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 260 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 SAIJ63AX260-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×260 | 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 SAIJ63AX260-50 Is Used
Machine Changeover
Dial in the 210 to 260 mm stroke window during product size transitions to set new end positions rapidly without changing the cylinder.
Variable End Stops
Use the 50 mm rear adjustment screw to fine-tune the retract position precisely at commissioning for multi-format production lines.
Actuator Setup
Leverage the 1559 N push force and SUS420J2 stainless rod to dial in exact clamping or positioning distances in varied manufacturing setups.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-50 the Right Cylinder?
Select this 63 mm bore cylinder when an application requires precise end-position tuning at commissioning without changing the cylinder, stepping up from a 50 mm bore that provides 982 N of push force at 0.5 MPa. Because the 260 mm stroke exceeds 300 mm is not an issue here, but for any longer unsupported strokes, an external guide is recommended to handle side loads. To match this cylinder exactly for an ISO 15552 replacement, specify the 63 mm bore, 260 mm stroke, 50 mm adjustment, PT port threads, SUS420J2 rod material, and no magnet.
If your process requires the load to be held mechanically without continuous air pressure, a standard SAIJ will not suffice since its adjuster is only a stop. In those cases, consider the SAIL pneumatic lock or BSAI clamp-lock cylinder variants 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 SAIJ63AX260-50 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
The rear adjuster screw allows you to shorten the nominal 260 mm stroke by up to 50 mm, providing an effective travel window of 210 to 260 mm. The adjuster functions as a mechanical stop and does not lock the load without live air pressure.
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