Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-75S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-75S 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 SAIJ63AX260-75S
The AirTAC SAIJ63X260-75-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 185 to 260 mm, allowing you to dial back the nominal 260 mm stroke by up to 75 mm during commissioning without adding external stops. In the 63 mm bore class, it generates 1559 N of push force and 1402 N of pull force at 0.5 MPa operating pressure.
This variant features a SUS420J2 stainless steel rod for improved corrosion resistance and includes a magnet for position sensing with CMSE reed and DMSE electronic switches. The extruded aluminum barrel includes sensor grooves on both sides, and the G3/8 PT tapered ports deliver pneumatic flow suited to its 30-800 mm/s speed range.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-75S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-75S |
|---|---|
| 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 SAIJ63AX260-75S
| 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 SAIJ63AX260-75S Is Used
Product Changeover
Quickly reposition the retract end-stop within the 185-260 mm window when switching between product sizes on a packaging line.
Machine Commissioning
Fine-tune the final end position during initial setup without physically swapping out the entire cylinder or adding shims.
Variable End Stops
Dial in the exact clamping distance on test fixtures where the required stroke varies slightly between workpieces.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-75S the Right Cylinder?
Choose this 63 mm bore cylinder when your machine setup requires variable end stops or product-size changeovers, stepping up from a 50 mm bore (982 N push at 0.5 MPa) when you need roughly 50 percent more force. The rear screw acts as a travel stop to fine-tune the retract position, but it does not hold the load without live air; for true load-holding without pneumatic pressure, select an AirTAC SAIL or BSAI cylinder. To match this ISO 15552 replacement exactly, specify: 63 mm bore, 260 mm stroke, 75 mm adjustment, PT ports, SUS420J2 rod, and the -S magnet. Since the stroke exceeds 300 mm on neighbouring sizes, always use an external guide to prevent side-load damage on long unsupported travels.
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 SAIJ63AX260-75S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. It can reach up to 2182 N of push force at 0.7 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from 260 mm down to 185 mm. This allows precise end-position tuning at commissioning without changing the cylinder or adding external stops, though it does not lock the load without live air.
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