Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-40
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX240-40 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke240 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 SAIJ80BX240-40
The AirTAC SAIJ80X240-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to trim the effective travel back by up to 40 mm, creating a precise 200-240 mm usable window. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
Because the adjuster acts purely as a mechanical stop at the retract end, it does not hold the load without live air pressure; for true position holding you would need a SAIL or BSAI variant. The robust 25 mm rod and M20x1.5 thread handle high side loads well, while the available mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-40 |
|---|---|
| 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 | 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 SAIJ80BX240-40
| 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 SAIJ80BX240-40 Is Used
Machine Setup & Commissioning
Dial in the exact 200-240 mm retract distance during initial machine build without machining custom spacers or changing the cylinder.
Product Size Changeovers
Quickly adapt the end-stop position on a packaging line when running a new product size, saving setup time between batches.
Variable End-Stop Positioning
Use the 40 mm adjustment window to vary the stroke endpoint for multi-format tooling operations on a single fixture.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX240-40 the Right Cylinder?
Choose this 80 mm bore when your application requires more thrust than a 63 mm cylinder (1559 N at 0.5 MPa) but you want to avoid the larger footprint of a 100 mm unit. The 40 mm adjustment range is ideal for fine-tuning end positions during machine commissioning or product changeovers without swapping out the physical cylinder or adding external stopper blocks.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 240 mm nominal stroke, PT port thread, and the required mounting accessory. If you need position feedback, note that this specific SKU omits the magnet, so you would need the -S variant to use AirTAC CMSE reed or DMSE electronic sensors. At 240 mm stroke, side-load risk is moderate, but always ensure proper external guiding for heavy loads.
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 SAIJ80BX240-40 FAQ
At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that shortens the retract stroke by up to 40 mm. For this 240 mm stroke model, it creates an adjustable travel window between 200 and 240 mm, allowing you to fine-tune the end position without swapping cylinders.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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