Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-10
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 280mm 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
- Stroke280 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-10
The AirTAC SAIJ80X280-10 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 270-280 mm, allowing you to dial back the nominal 280 mm stroke by up to 10 mm. In this bore size, the carbon steel piston rod is 25 mm thick with an M20x1.5 thread, providing a robust interface that handles high side loads well.
This model delivers 2513 N of pull force at 0.5 MPa and up to 4523 N at 0.9 MPa. The extruded aluminum barrel includes sensor grooves on both sides, and because no magnet is specified, you would add a -S option to use AirTAC CMSE reed or DMSE electronic sensors. The rear adjuster acts purely as a mechanical stop to fine-tune the end position and is not a lock, meaning the cylinder cannot hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-10 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 280 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 SAIJ80X280-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×280 | 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 SAIJ80X280-10 Is Used
Machine Changeover
Dial in the exact 270-280 mm end-stop during product size changes without swapping the physical cylinder.
End-Position Tuning
Fine-tune the retract position at commissioning to absorb mechanical tolerances in your fixture design.
Variable Stops
Achieve precise retract limits on automated machinery using the integrated 10 mm rear adjustment screw.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-10 the Right Cylinder?
Choose this 80 mm bore if you need to trim the retract end-position during machine setup without adding external stops. If your application requires less force, stepping down to a 63 mm bore yields 1402 N of pull at 0.5 MPa. For load-holding without continuous air pressure, consider the SAIL or BSAI series, as the SAIJ adjuster only decelerates travel.
This cylinder is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2. It features PT tapered port threads. Because the 280 mm stroke is relatively long, ensure adequate external guiding to prevent rod deflection and premature seal wear.
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 SAIJ80X280-10 FAQ
At 0.5 MPa it provides 2513 N of pull force and 2268 N of push force. At 0.9 MPa, the push force increases to 4523 N.
The rear adjuster lets you shorten the 280 mm stroke by up to 10 mm, giving a 270-280 mm travel window. It functions as a mechanical stop, not a lock, so it cannot hold the load without live air.
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