Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-75 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 SAIJ80AX280-75
The AirTAC SAIJ80X280-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to fine-tune the travel window from 205 to 280 mm. It delivers a robust 4523 N of push force at 0.9 MPa, making it well-suited for heavy positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides for straightforward switch mounting.
This model uses a 25 mm piston rod with an M20x1.5 thread and a PT tapered port to handle high side loads. The rod is constructed from SUS420J2 stainless steel, offering enhanced durability against moisture and wear. The rear adjuster functions strictly as a mechanical stop to set the retraction end-point and relies on the integrated air cushions for deceleration; it will not hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-75 |
|---|---|
| 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 SAIJ80AX280-75
| 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 SAIJ80AX280-75 Is Used
Variable End-Stop Tuning
Dial in the exact retraction point from 205 to 280 mm during machine commissioning to accommodate varying material thicknesses without external stops.
Product Changeover Setup
Quickly adjust the travel window on automated lines handling different product sizes, reducing downtime between production runs.
Heavy Load Positioning
Leverage the 4523 N push force at 0.9 MPa to shift heavy pallets or fixtures, using the rear screw to set precise stopping distances.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX280-75 the Right Cylinder?
Choose this 80 mm bore if you need more thrust than the 63 mm option provides (2182 N at 0.7 MPa) but do not require the full 7068 N push force of the 100 mm variant at 0.9 MPa. The 75 mm adjustment range is ideal for production lines running mixed product sizes, as you can dial in the exact end-stop during changeover without physically swapping the cylinder or adding external spacers. Because the nominal stroke is 280 mm, you should support the load with an external guide to prevent excessive rod deflection.
If your application demands true load-holding without continuous compressed air, this standard SAIJ adjuster will not act as a brake; consider the SAIL (air-released lock) or BSAI (clamp-lock) series instead. This cylinder is dimensionally interchangeable with ISO 15552 mounting interfaces and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts. It uses a PT port and omits a magnet, meaning electronic DMSE or reed CMSE position sensing cannot be added without changing the specification.
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 SAIJ80AX280-75 FAQ
The rear adjuster acts as a mechanical stop that lets you trim the effective stroke back by up to 75 mm from the 280 mm nominal length, providing a usable travel window of 205 to 280 mm. It only sets the end position and relies on the air cushions for deceleration; it does not lock the load.
At an operating pressure of 0.9 MPa, the SAIJ80X280-75 generates a push force of 4523 N and a pull force of 4050 N. It operates at speeds between 30 and 800 mm/s.
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