Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-40 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 SAIJ63AX260-40
The AirTAC SAIJ63X260-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 220 to 260 mm, allowing you to dial back the nominal stroke by up to 40 mm during commissioning. Delivering 1559 N of pull force at 0.5 MPa and 2805 N of push force at 0.9 MPa, it fits medium-duty applications perfectly.
This unit is built with a SUS420J2 stainless steel piston rod (option A) for enhanced corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE solid-state switches. The rear adjuster acts purely as a mechanical stop to fine-tune the end position without adding external stops.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-40 |
|---|---|
| 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 SAIJ63AX260-40
| 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 SAIJ63AX260-40 Is Used
Product Changeovers
Quickly adjust the end-stop from 220 to 260 mm when switching product sizes on a packaging line without replacing the cylinder.
End-Position Tuning
Fine-tune the retract stroke during machine commissioning to perfectly align tooling without machining external stop blocks.
Variable Stroke Assembly
Press or insert parts to varying depths by dialing the rear adjuster, accommodating different material thicknesses on the fly.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-40 the Right Cylinder?
Choose this 63 mm bore when you need more thrust than a 50 mm bore provides (982 N pull at 0.5 MPa) but want to avoid the larger footprint of an 80 mm bore (2268 N pull at 0.5 MPa). The 40 mm adjustment range is ideal for product-size changeovers on a line, letting you set variable end-stops without physically swapping the cylinder. For strokes of 260 mm, the 20 mm diameter rod handles side loads well, but an external guide is still recommended for unsupported lengths.
Because this is a standard SAIJ variant, the rear screw stopper only sets the travel end and relies on the internal air cushion for deceleration. It does not hold the load without live air pressure. If your application requires fail-safe load holding, consider the SAIL (air-released lock) or BSAI (clamp-lock) series instead. This cylinder is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ63AX260-40 FAQ
At 0.5 MPa, it provides 1559 N of push force and 1402 N of pull force. At 0.9 MPa, the push force increases to 2805 N.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from the nominal 260 mm down to 220 mm. It sets the travel end but does not lock the load without continuous air pressure.
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