Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 120mm 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
- Stroke120 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-20
The AirTAC SAIJ80X120-20 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features an 80mm bore delivering 2513N of push thrust at 0.5 MPa, paired with a 120mm nominal stroke that can be dialed back by up to 20mm. This yields a precise 100-120mm usable travel window, allowing you to fine-tune the retract end position at commissioning without adding external stops.
Unlike fixed-stroke alternatives, this adjustable model lets you dial in the exact end-stop during machine setup or product changeover. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic sensors. The 25mm carbon steel rod and M20x1.5 rod thread provide robust resistance to side loads, while the PT tapered G3/8 port ensures a tight pneumatic connection.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 120 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 SAIJ80X120-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×120 | 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 SAIJ80X120-20 Is Used
Machine Changeover
Dial in the 100-120mm travel window during product size changes to set new retract positions without swapping cylinders.
Variable End Stops
Use the rear adjuster to fine-tune the exact end-of-stroke position during commissioning rather than machining external stop blocks.
Assembly Line Tuning
Leverage the 2513N thrust to press components securely while trimming the final 20mm of travel for precise alignment.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-20 the Right Cylinder?
Choose this 80mm bore when an application requires substantial force—delivering 2513N push and 2268N pull at 0.5 MPa. If your setup needs less force, stepping down to a 63mm bore yields 1559N, whereas larger loads up to 3927N push require the 100mm variant. The adjustable 20mm window is ideal for variable end stops, but remember the rear screw acts only as a travel stop; it does not hold the load without live air. For fail-safe load holding without pressure, consider the SAIL or BSAI series.
As a dimensionally interchangeable ISO 15552 cylinder, it matches standard mounting footprints but uses a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Ensure your configuration specifies the 80mm bore, 120mm stroke, 20mm adjustment, PT port thread, and standard carbon steel rod. Because the stroke is under 300mm, side-load concerns are minimal, though an external guide is always recommended for heavy radial loads.
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 SAIJ80X120-20 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push thrust and 2268N of pull thrust. At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster screw allows you to shorten the 120mm nominal stroke by up to 20mm, creating a 100-120mm usable travel window. It acts as a mechanical stop to fine-tune end positions and does not function as a lock or brake to hold the load without live air pressure.
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