Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 240mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke240 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-75S
The AirTAC SAIJ80X240-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 165 to 240 mm. Delivering 2513 N of push force at 0.5 MPa, it is built with an SUS420J2 stainless steel rod to resist corrosion in demanding environments. A rear mounted stopper screw allows you to fine-tune the retract position during commissioning without adding external stops.
This model includes a magnetic piston for position detection, working seamlessly with AirTAC CMSE reed and DMSE electronic sensors via the dual-side barrel grooves. It features PT tapered ports sized G3/8 and utilizes the standard SAIJ mounting set, which includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets while omitting FB, CA, CB, and CR options.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 240 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×240 | 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 SAIJ80 Adjustable Cylinder SAIJ80AX240-75S Is Used
Product Changeovers
Dial in the retract position up to 75mm to accommodate different product sizes on the same line without swapping cylinders.
Machine Setup
Fine-tune the end-of-stroke position during commissioning to achieve precise alignment without adding external mechanical stops.
Variable End Stops
Adjust the effective stroke window between 165 and 240mm to adapt the cylinder's motion to varying process requirements.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-75S the Right Cylinder?
Choose this 80mm bore when an application requires more thrust than the 63mm variant, which provides 1559 N at 0.5 MPa. The 75 mm adjustment range is ideal for machinery that undergoes frequent product changeovers, allowing operators to dial in the exact retract end-stop on the fly. For applications needing fixed travel without end-stop tuning, the standard SAI model is a simpler alternative.
Because the nominal stroke is 240 mm, the 25mm rod and M20x1.5 thread handle side loads well, though an external guide is recommended for heavy lateral loads. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider the SAIL or BSAI series. To match this ISO 15552 cylinder, specify an 80mm bore, 240mm stroke, 75mm adjustment, PT G3/8 ports, and the -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 SAIJ80 Adjustable Cylinder SAIJ80AX240-75S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513 N of push force and 2268 N of pull force. It can reach a maximum push force of 4523 N at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the nominal 240mm down to 165mm. This creates a highly flexible 165-240mm usable window for fine-tuning the retract position during setup.
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