Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-30S 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 SAIJ80X120-30S
The AirTAC SAIJ80X120-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513 N push force at 0.5 MPa, making it well-suited for heavy-duty positioning tasks. The integrated -S magnet enables position sensing with AirTAC CMSE reed or DMSE electronic switches housed in the dual-side sensor grooves.
Featuring a 120 mm nominal stroke, the external rear stopper provides a 30 mm trim range, yielding a precise 90-120 mm usable travel window. This allows you to fine-tune the retract end position at commissioning without adding external stops. The extruded aluminum barrel uses a PT tapered port thread, and the 25 mm carbon steel rod with an M20x1.5 thread offers strong resistance to side loading.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-30S |
|---|---|
| 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 SAIJ80X120-30S
| 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 SAIJ80X120-30S Is Used
Changeover Calibration
Dial in the 90-120 mm retract window during product size changeovers on a packaging line without swapping out the entire actuator.
Machining End Stops
Fine-tune the clamping end position on a machining fixture to compensate for tooling wear, utilizing the 2513 N push force at 0.5 MPa.
Variable Diverting
Adjust the stroke length on the fly for a conveyor diverting arm to handle different package widths accurately.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-30S the Right Cylinder?
Select this 80 mm bore cylinder when an application requires substantial force—such as the 2513 N push or 2268 N pull at 0.5 MPa—but also demands variable end-stop positioning during machine setup or product changeover. If your process requires less force, stepping down to a 63 mm bore yields 1559 N of push force at 0.5 MPa. Conversely, heavier loads might require the 100 mm bore, which provides 3927 N at 0.5 MPa.
The adjustable stroke is ideal for dialing in exact retract distances on the fly, whereas a fixed-stroke SAI cylinder locks you into a single dimension. Remember that the rear adjuster functions strictly as a travel stop, not a lock; it will not hold the load without live air pressure. For true load-holding, consider an external rod lock or the AirTAC SAIL series. To match this ISO 15552 interchangeable cylinder, specify: 80 mm bore, 120 mm stroke, 30 mm adjustment, PT port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and the -S 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 SAIJ80X120-30S 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 adjusting screw acts as a mechanical stopper, allowing you to shorten the 120 mm nominal stroke by up to 30 mm. This creates a 90-120 mm usable travel window for fine-tuning the end position during setup, without acting as a load-holding lock.
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