Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-75 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 SAIJ80X280-75
The AirTAC SAIJ80X280-75 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N of push force at 0.5 MPa and features a 280mm nominal stroke that can be fine-tuned down by up to 75mm, creating a usable travel window of 205-280mm. This wide adjustment band is ideal for dialing in exact end positions during commissioning without swapping hardware.
The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches, though this specific SKU omits the internal magnet. The 25mm carbon steel piston rod and M20x1.5 rod thread provide substantial rigidity, while the rear stopper acts purely as a travel limit and does not lock the load without live air pressure. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-75 |
|---|---|
| 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 SAIJ80X280-75
| 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 SAIJ80X280-75 Is Used
Product Changeovers
Quickly modify the 205-280mm retract distance to accommodate different carton sizes or package lengths on a packaging line without changing the cylinder.
End-Position Tuning
Fine-tune the final resting position of a press or clamping fixture during machine commissioning to achieve exact alignment without adding external spacers.
Variable End Stops
Provide a flexible physical stop for automated assembly equipment, allowing the stroke length to be dialed back precisely for different tooling heights.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X280-75 the Right Cylinder?
Choose this 80mm bore when an application requires higher thrust than a 63mm cylinder (which provides 1559N push at 0.5 MPa) but without the physical bulk of a 100mm bore. The generous 75mm adjustment range makes the SAIJ80X280-75 highly advantageous for product changeovers on a packaging line, allowing operators to reset the retract end-position rapidly instead of fabricating external stops or ordering a fixed-stroke SAI cylinder.
Because the 280mm stroke is substantial, the unsupported load should be guided externally to prevent excessive side-loading on the 25mm rod. Remember that the rear adjuster and air cushions only decelerate the travel end; they are not a locking mechanism. If the machine requires true load-holding without continuous air pressure, integrate an external pilot-operated check valve or select an AirTAC SAIL or BSAI cylinder. This model uses a PT tapered port thread and is dimensionally interchangeable per ISO 15552.
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 SAIJ80X280-75 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At its maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 75mm from the 280mm nominal length, providing a usable travel window of 205-280mm. It functions as a mechanical stop to set the end position and does not lock the load when air pressure is removed.
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