Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-75
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-75 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 SAIJ63AX260-75
The AirTAC SAIJ63X260-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that trims the nominal 260 mm travel back by up to 75 mm. This creates a usable 185-260 mm end-position window, allowing precise fine-tuning at commissioning or during product changeovers without swapping the barrel or adding external stops. It delivers a robust 2182 N push force at 0.7 MPa, matching the standard SAI thrust class.
This SKU is configured with a SUS420J2 stainless steel rod (option A) for improved corrosion resistance compared to standard carbon steel. It features PT tapered ports sized at G3/8 and uses an extruded aluminum barrel with sensor grooves on both sides. The rear adjuster acts purely as a mechanical stop to set the retract end-position, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-75 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-75 |
|---|---|
| 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 SAIJ63AX260-75
| 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 SAIJ63AX260-75 Is Used
Product Changeover
Dial in the 185-260 mm travel window on the fly when switching between product lengths on a packaging line.
End-Position Tuning
Fine-tune the retract stroke during commissioning to hit exact sensor targets without machining new spacers.
Machine Setup
Use the rear stopper to set precise end-stops for varying fixture heights without altering the pneumatic plumbing.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-75 the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI when your fixture requires variable end-stops or frequent machine setup adjustments across slightly different product sizes. If your application demands less thrust, stepping down to a 50 mm bore yields 1374 N at 0.7 MPa, while stepping up to an 80 mm bore provides 3518 N for heavier loads. To replace this ISO 15552 cylinder, match the 63 mm bore, 260 mm stroke, 75 mm adjustment, PT G3/8 port, and your required mounting from the SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the 260 mm stroke is substantial, ensure adequate external guidance to prevent excessive side-loading on the 20 mm rod. For load-holding without live pressure, select the SAIL or BSAI series instead, as the SAIJ adjuster is not a lock.
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 SAIJ63AX260-75 FAQ
At an operating pressure of 0.7 MPa, this 63 mm bore cylinder generates 2182 N of push force and 1402 N of pull force. It can deliver up to 2805 N at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 260 mm nominal stroke by up to 75 mm, providing a usable travel window of 185 to 260 mm. It sets the end-position but does not lock the load without live air.
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