Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 80mm 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
- Stroke80 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-10
The AirTAC SAIJ40X80-10 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 80 mm stroke that can be fine-tuned down by up to 10 mm, giving you a precise 70-80 mm usable travel window during commissioning without needing external stops. Built with a SUS304 stainless steel rod, it delivers 628 N of push force at 0.5 MPa.
This model utilizes PT tapered port threads (G1/4) and operates at speeds of 30-800 mm/s. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. If you need position sensing later, adding an -S magnet allows the use of AirTAC CMSE reed or DMSE electronic sensors.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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 SAIJ40BX80-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 SAIJ40BX80-10 Is Used
Product Changeovers
Dial in the 70-80 mm travel window on the fly to accommodate slight length variations when switching between product sizes on a packaging line.
End-Stop Calibration
Fine-tune the final retract position during machine setup without fabricating or bolting on external physical stoppers.
Assembly Clamping
Apply up to 628 N of clamping force precisely where needed, using the rear screw to set the exact clamping depth.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-10 the Right Cylinder?
Choose this 40 mm bore when an application requires around 628 N of thrust at 0.5 MPa; stepping down to a 32 mm bore drops the push force to 402 N, while a 50 mm bore increases it to 982 N. The adjustable 70-80 mm travel window is perfect for product changeovers where the exact end-of-stroke position varies slightly, saving you from swapping out a fixed-stroke SAI cylinder. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air—if you need true load-holding, consider the SAIL or BSAI series. This cylinder is dimensionally interchangeable per ISO 15552, using a reduced mounting set of 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 SAIJ40 Adjustable Cylinder SAIJ40BX80-10 FAQ
It features a rear adjusting screw that acts as a mechanical stopper, allowing you to shorten the effective stroke by up to 10 mm. This creates a 70-80 mm usable travel window for fine-tuning the end position at commissioning.
At an operating pressure of 0.5 MPa, the SAIJ40X80-10 provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
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