Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-10 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 SAIJ40BX260-10
The AirTAC SAIJ40X260-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 260 mm nominal stroke by up to 10 mm for a precise 250-260 mm usable travel window. Delivering 879 N of push force at 0.7 MPa, it handles mid-range automation tasks with ease. The extruded aluminum barrel features sensor grooves on both sides for straightforward switch placement.
This configuration utilizes a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads with a G1/4 connection. The rear adjustment screw acts purely as a mechanical stop to set the retract end position during commissioning; it does not lock or hold the load without continuous air pressure. For position-holding requirements, an external pilot-operated check valve or an AirTAC SAIL locking cylinder is required.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-10 |
|---|---|
| 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 SAIJ40BX260-10
| 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 SAIJ40BX260-10 Is Used
End-Position Tuning
Dial in the exact retract distance within the 250-260 mm window during commissioning without needing external shims or stopper blocks.
Product Changeover
Quickly adjust the stroke by up to 10 mm on packaging lines when transitioning between slightly different product sizes.
Corrosive Assembly
Leverage the SUS304 stainless steel rod for reliable actuation in light manufacturing environments where moisture is present.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX260-10 the Right Cylinder?
Select this 40 mm bore cylinder when an application requires 879 N of push force at 0.7 MPa, stepping up from a 32 mm bore that provides 563 N, or down from a 63 mm bore that yields 2182 N. The adjustable stroke is ideal for machine setups requiring variable end-stops or product changeovers, saving the cost of swapping out a fixed-stroke SAI cylinder. Because the stroke is 260 mm, ensure adequate external guiding to prevent excessive side loading on the SUS304 rod and M12x1.25 rod thread. To match this ISO 15552 footprint, specify the 40 mm bore, 260 mm stroke, 10 mm adjustment, PT port thread, and your desired mounting style from the available Basic, FA, LB, TC, FTC, TCM1, or TCM2 options.
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 SAIJ40BX260-10 FAQ
At an operating pressure of 0.7 MPa, this 40 mm bore cylinder provides 879 N of push force and 739 N of pull force. At 0.5 MPa, the push force is 628 N.
The rear adjuster screw lets you mechanically shorten the 260 mm nominal stroke by up to 10 mm, creating a 250-260 mm travel window. It functions as a travel stop and does not hold the load without live air pressure.
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