Airtac SAIJ80 Adjustable Cylinder SAIJ80AX475-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX475-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 475mm 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
- Stroke475 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX475-40
The AirTAC SAIJ80X475-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel between 435 and 475 mm without adding external stops. Delivering a robust 2513 N push force at 0.5 MPa, it handles demanding positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This variant is equipped with a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and features PT tapered port threads (G3/8). The rear adjuster acts purely as a mechanical stop to set the retract end position; it does not lock the load without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX475-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX475-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 475 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 SAIJ80AX475-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×475 | 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 SAIJ80AX475-40 Is Used
Product Changeover
Dial in the 435-475 mm travel window during format size changes on a packaging line, avoiding the need to physically swap out the entire cylinder.
Machine Setup
Fine-tune the retract end-position at commissioning to perfectly seat heavy 2513 N mechanical assemblies without adding external hard stops.
Variable End Stops
Accommodate multiple part lengths on a single conveyor system by adjusting the rear stopper screw up to 40 mm between production runs.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX475-40 the Right Cylinder?
Choose this 80 mm bore when your application requires more thrust than a 63 mm cylinder (which provides 1559 N push at 0.5 MPa) but less bulk than a 100 mm option. The adjustable 435-475 mm window is ideal for machine setups requiring variable end-stops during product changeovers. For fixed-travel needs without commissioning adjustments, the standard SAI series is a simpler alternative.
Because the 475 mm stroke is substantial, ensure adequate external guiding to prevent excessive rod side-loading, as the 25 mm rod diameter can only compensate so much. To match this ISO 15552 footprint exactly, specify an 80 mm bore, 475 mm stroke, 40 mm adjustment, PT G3/8 ports, Basic/FA/LB/TC/FTC/TCM1/TCM2 mountings, and no magnet. If position holding without live air is required, integrate an external rod lock or choose the SAIL/BSAI series.
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 SAIJ80AX475-40 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 mechanically shorten the nominal 475 mm stroke by up to 40 mm, providing an effective usable travel window of 435 to 475 mm. This stopper only sets the end position and does not hold the load without live air.
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