Airtac SAIJ40 Adjustable Cylinder SAIJ40BX140-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX140-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 140mm 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
- Stroke140 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX140-10S
The AirTAC SAIJ40X140-10-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 130 to 140 mm, allowing you to dial back the nominal 140 mm stroke by up to 10 mm during machine commissioning. Delivering 628 N of push force at 0.5 MPa, it handles medium-duty positioning tasks effectively.
This specific SKU is equipped with a SUS304 stainless steel rod (option B) for superior corrosion resistance and includes a built-in magnet (-S) compatible with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides, and the PT tapered port threads ensure a tight, reliable pneumatic connection.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX140-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX140-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 140 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 SAIJ40BX140-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×140 | 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 SAIJ40BX140-10S Is Used
Changeover Calibration
Dial in the exact 130-140 mm retract position during product size changeovers on a packaging line without swapping out the entire cylinder.
End-Stop Tuning
Fine-tune the final resting position of a machining fixture by adjusting the rear screw, compensating for mechanical wear over time.
Diversion Gate Setup
Set the precise extension length of a conveyor sorting gate during initial commissioning to ensure packages deflect smoothly without jamming.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX140-10S the Right Cylinder?
Select this 40 mm bore cylinder when your application requires 628 N of push force at 0.5 MPa, stepping up from a 32 mm bore (402 N) for heavier loads or down from a 50 mm bore (982 N) to save space. The 10 mm rear adjustment screw is ideal for fine-tuning the retract end position during product changeovers without adding external stops. Note that the adjuster functions only as a travel stop; it does not hold the load without live air. For pneumatic locking needs, consider the SAIL or BSAI series.
Because the 140 mm stroke is below the 300 mm threshold, side-load stress on the M12x1.25 rod thread is moderate, though external guides are still recommended for heavy lateral loads. This cylinder uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and is dimensionally interchangeable with ISO 15552 cylinders. To match this exact configuration, specify: 40 mm bore, 140 mm stroke, 10 mm adjustment, PT ports, SUS304 rod, and a -S magnet.
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 SAIJ40BX140-10S FAQ
At a 0.5 MPa operating pressure, this 40 mm bore cylinder generates 628 N of push force and 528 N of pull force. It can reach a maximum push force of 1130 N at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the nominal 140 mm down to as little as 130 mm. This creates a 130-140 mm usable window for fine-tuning the end position at commissioning without replacing the cylinder.
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