Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 90mm 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
- Stroke90 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-20
The AirTAC SAIJ80X90-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end-of-travel position. With a nominal 90 mm stroke and a 20 mm adjustment range, it provides a usable travel window of 70 to 90 mm. This enables precise commissioning without the need to swap out the entire actuator. Delivering 2513 N of push force at 0.5 MPa, it is built to handle demanding mid-range loads.
This variant is equipped with a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. The rear stopper acts solely as a travel end setter, meaning it will not hold a load safely without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 90 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 SAIJ80AX90-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×90 | 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 SAIJ80AX90-20 Is Used
Machine Changeovers
Dial in the 70-90 mm travel window during product size changes to set new end stops without physically replacing the cylinder.
End-Position Tuning
Fine-tune the retract stroke at commissioning to perfect the seating of 2513 N loads without adding bulky external mechanical stops.
Dynamic Diverter Setup
Adjust the stroke on the fly to accommodate varying package sizes on a conveyor line, ensuring accurate routing.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX90-20 the Right Cylinder?
Selecting this 80 mm bore actuator makes sense when your application requires 2513 N of push force at 0.5 MPa and on-the-fly end-position tweaking. If your setup demands less force, stepping down to a 63 mm bore yields 1559 N, whereas moving up to a 100 mm bore provides 3927 N. The adjustable 70 to 90 mm window is ideal for product changeovers on a line, giving you the flexibility that a fixed-stroke SAI cylinder cannot. For load-holding without live air pressure, this cylinder is insufficient; you should instead explore the SAIL or BSAI locking variants. To match this exact configuration, specify an 80 mm bore, 90 mm stroke, 20 mm adjustment, PT ports, SUS420J2 rod, and no magnet.
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 SAIJ80AX90-20 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 lets you shorten the nominal 90 mm stroke by up to 20 mm, creating a 70 to 90 mm usable travel window. This stopper only sets the end position and does not lock the load without live air.
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