Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-40
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX140-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 140mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke140 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-40
The AirTAC SAIJ80X140-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 40 mm. This creates a highly flexible 100-140 mm usable stroke window, letting you dial in the exact retract position during commissioning without swapping out the entire actuator.
Providing variable air cushioning at both ends to decelerate the load smoothly, this cylinder relies on the rear screw as a travel stop rather than a load-holding lock. It utilizes a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR options to streamline setup. For position sensing, you can easily add AirTAC CMSE reed or DMSE electronic sensors later by specifying a magnet-equipped variant.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 140 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | 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 SAIJ80 Adjustable Cylinder SAIJ80BX140-40 Is Used
Machine Changeover
Dial in the 100-140 mm retract position during product size transitions without physically replacing the cylinder or adding external spacers.
Variable Diverter Stroke
Adjust the travel window on a sorting line to handle different package depths, using the rear stopper to shorten the stroke as needed.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX140-40 the Right Cylinder?
Choose this 80 mm bore when your application requires more thrust than the 50 mm class (982 N at 0.5 MPa) but does not need the massive output of a 100 mm bore (3927 N at 0.5 MPa). An adjustable stroke is ideal for machine changeovers where product sizes vary, allowing operators to fine-tune the end stop on the fly instead of machining external spacers. Because the SAIJ80X140-40 lacks a true locking mechanism, it will not hold a load without live air pressure; if your setup requires dead-stop holding, consider the SAIL or BSAI series instead. When replacing an ISO 15552 cylinder, match the 80 mm bore, 140 mm stroke, 40 mm adjustment range, PT ports, and the desired mounting accessory.
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 SAIJ80BX140-40 FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the 140 mm nominal stroke by up to 40 mm, creating a 100-140 mm usable travel window for fine-tuning end positions.
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Covers non-human-caused product damage.
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