Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40 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 SAIJ80AX280-40
The AirTAC SAIJ80X280-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 280 mm stroke that can be fine-tuned down by up to 40 mm, giving you a usable travel window between 240 and 280 mm to perfectly dial in end positions during commissioning. Delivering 2513 N of push force at 0.5 MPa, it is built with an SUS420J2 stainless steel rod for enhanced corrosion resistance and uses PT tapered port threads.
This extruded aluminum profile cylinder includes variable air cushions at both ends to manage deceleration. The rear adjuster acts purely as a mechanical stop to set the travel limit and does not hold the load without live air pressure. It supports standard SAIJ mounting options including Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR configurations.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40 |
|---|---|
| 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 SAIJ80AX280-40
| 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 SAIJ80AX280-40 Is Used
Product Changeovers
Quickly adapt the 240-280 mm travel window for different sized parts on the same conveyor line without changing out the physical cylinder.
Machine Setup
Fine-tune the exact end-of-stroke position during initial commissioning to perfect pressing or lifting operations without external shims.
Variable End Stops
Dial in the rear mechanical stop to accommodate multi-format packaging machines that require precise but flexible stroke limits.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-40 the Right Cylinder?
Select this 80 mm bore when an application requires substantial thrust, such as 2513 N push or 2268 N pull at 0.5 MPa, but needs less power than a 100 mm bore that yields 3927 N push. The adjustable 240-280 mm travel window is ideal for product changeovers on a line, allowing you to shift the end-stop without physically swapping the cylinder or adding external stops. For load-holding without continuous air pressure, this cylinder is insufficient; you should explore the SAIL or BSAI series instead.
Because this 280 mm stroke creates a long lever arm, the 25 mm rod diameter and M20x1.5 rod thread provide robust support, but an external guide is still recommended to prevent excessive side-loading. To achieve a true ISO 15552 replacement match, verify the 80 mm bore, 280 mm stroke, 40 mm adjustment, G3/8 port, PT thread type, and your required mounting hardware.
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 SAIJ80AX280-40 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At 0.7 MPa, the push force increases to 3518 N.
The rear adjuster screw allows you to shorten the effective travel from the nominal 280 mm down to 240 mm. This mechanical stop sets the end position but does not lock the load without live air pressure.
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