Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-20S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-20S 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 SAIJ63AX260-20S
The AirTAC SAIJ63X260-20-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 240-260 mm, allowing you to dial back the nominal 260 mm stroke by up to 20 mm during commissioning. In the 63 mm bore class, it delivers 1559 N of pull force at 0.5 MPa and 2182 N of push force at 0.7 MPa, matching standard SAI thrust capabilities.
This variant includes an SUS420J2 stainless steel piston rod (option A) for enhanced corrosion resistance and a built-in magnet (-S) for position sensing. It is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches housed in the dual-side sensor grooves. The SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets found on other series.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-20S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-20S |
|---|---|
| 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 SAIJ63AX260-20S
| 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 SAIJ63AX260-20S Is Used
End-Stop Calibration
Perfect for dialing in the exact retract position on a 260 mm stroke fixture, offering a 240-260 mm window to fine-tune tooling offsets without swapping cylinders.
Product Changeover
Ideal for packaging lines that run multiple carton sizes, allowing operators to quickly adjust the effective stroke length to match new package dimensions.
Sensor-Driven Positioning
Pairs with DMSE solid-state sensors in the integrated barrel grooves to confirm end-of-stroke travel after the 20 mm rear stopper adjustment is locked.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-20S the Right Cylinder?
Choose this 63 mm bore adjustable-stroke cylinder when your application requires exact end-position tuning without adding external mechanical stops. If your process demands less force, stepping down to a 50 mm bore yields 825 N of pull force at 0.5 MPa; for heavier loads, an 80 mm bore provides 2268 N. The rear adjuster acts purely as a travel stop to set the retract position and does not hold the load without live air pressure. For fail-safe load holding, select the SAIL pneumatic lock or BSAI clamp-lock cylinder instead. Ensure you match the exact replacement configuration: 63 mm bore, 260 mm stroke, 20 mm adjustment, PT tapered port threads, and the -S magnet option.
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 SAIJ63AX260-20S FAQ
At an operating pressure of 0.5 MPa, this 63 mm bore double-acting 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 acts as a mechanical stop that lets you shorten the effective stroke from the nominal 260 mm down to 240 mm. This creates a 240-260 mm travel window for fine-tuning at commissioning, but it does not lock the load without continuous air pressure.
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