Airtac SAIJ40 Adjustable Cylinder SAIJ40BX75-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX75-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX75-10
The AirTAC SAIJ40X75-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 75 mm travel by up to 10 mm for a precise 65-75 mm usable window. Delivering 628 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads.
This adjustable-stroke design eliminates the need to swap cylinders or add external stops during commissioning fine-tuning. The rear adjuster acts purely as a travel stop and works alongside variable air cushions at both ends to control end-of-stroke deceleration. It does not hold the load without live air pressure; for positive load-holding, consider the SAIL or BSAI series.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX75-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX75-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 SAIJ40BX75-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 SAIJ40BX75-10 Is Used
Commissioning Fine-Tuning
Dial in the exact 65 to 75 mm end-stop during machine setup without physically swapping out the pneumatic cylinder.
Product Size Changeover
Quickly adjust the rear stopper to accommodate slight variations in product dimensions on a packaging line.
Variable End-Stop Actuation
Use the 10 mm adjustment window to set precise retraction points for delicate material handling tasks.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX75-10 the Right Cylinder?
Select this 40 mm bore when an application requires precise end-position tuning on the fly, stepping down from a 50 mm bore (982 N push at 0.5 MPa) to save space, or up from a 32 mm bore (402 N) if you need more thrust. The 16 mm rod and M12x1.25 thread provide robust side-load capability, though any stroke over 300 mm would require an external guide.
To match this ISO 15552 interchangeable cylinder, confirm the 75 mm nominal stroke, 10 mm adjustment range, PT port threads, and your required mounting set (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Note that this SKU omits the -S magnet; choose an -S variant if you need to track position with CMSE reed or DMSE electronic sensors.
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 SAIJ40BX75-10 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 0.7 MPa, the push force increases to 879 N.
The rear adjuster screw allows you to shorten the 75 mm nominal stroke by up to 10 mm, creating a 65 to 75 mm usable travel window. It functions as a mechanical stop and does not lock the load without continuous air pressure.
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