Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-100
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 260mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke260 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-100
The AirTAC SAIJ40X260-100 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 260 mm nominal travel by up to 100 mm. This creates a 160-260 mm usable positioning window, giving you precise control over the retract end position without needing external stops. It delivers 628 N of push force at 0.5 MPa and features a SUS304 stainless steel rod for superior corrosion resistance.
This model utilizes a PT tapered port thread and lacks a piston magnet, meaning position sensing is not configured out of the box. The extruded aluminum barrel includes sensor grooves on both sides for standard rail mounting. Remember that the rear adjuster acts purely as a travel stop to set deceleration, not as a locking device; it cannot hold a load without continuous live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-100 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 260 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | 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 SAIJ40 Adjustable Cylinder SAIJ40BX260-100 Is Used
Product Changeovers
Quickly reconfigure the retract distance from 160 to 260 mm to accommodate varying package sizes on a filling line without changing hardware.
Machine Setup Calibration
Fine-tune the end-of-stroke position during commissioning to achieve exact material registration or clamping depth on a fixture.
Variable End Stops
Provide a customizable physical stop for diverter arms or pushers where the exact contact point needs occasional adjustment based on product type.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-100 the Right Cylinder?
Choose this 40 mm bore when an application requires roughly 628 N of push force at 0.5 MPa, or step up to the 63 mm bore if your setup demands 1559 N. The generous 100 mm adjustment range is ideal for product changeovers on a packaging line, letting operators fine-tune the end position rapidly instead of physically swapping cylinders. For fixed-stop applications where no rear adjustment is necessary, the standard SAI cylinder offers a simpler footprint.
When replacing an ISO 15552 cylinder, match the 40 mm bore, 260 mm stroke, PT port thread, and the specific 100 mm adjustment requirement. Because the stroke is 260 mm, ensure adequate external guiding to prevent excessive side-loading on the SUS304 rod. This SAIJ model supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets.
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 SAIJ40 Adjustable Cylinder SAIJ40BX260-100 FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 1130 N of push force.
The rear adjuster screw lets you shorten the effective stroke by up to 100 mm from the nominal 260 mm, creating a usable travel window of 160-260 mm. This stopper sets the end position but does not lock the load without live air pressure.
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