Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-50S 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 SAIJ80X120-50S
The AirTAC SAIJ80X120-50-S is a double-acting ISO 15552 profile cylinder engineered for applications requiring exact end-position tuning. A rear-mounted adjusting screw allows you to dial back the 120 mm nominal stroke by up to 50 mm, yielding a precise 70-120 mm usable travel window without adding external stops. Delivering 2268 N pull force at 0.5 MPa, it is built with a robust 25 mm carbon steel rod and M20x1.5 thread to handle high side loads.
This unit includes a standard piston magnet for position sensing via CMSE reed or DMSE electronic switches. The extruded aluminum barrel features sensor grooves on both sides for flexible mounting, while the rear stopper simply trims travel distance—it is not a lock and cannot hold loads without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-50S |
|---|---|
| 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 SAIJ80X120-50S
| 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 SAIJ80X120-50S Is Used
Machine Changeovers
Rapidly reconfigure the 70-120 mm stroke window during product family transitions without disassembling pneumatic lines or swapping cylinders.
End-Stop Calibration
Fine-tune the final retract position during commissioning to dial in exact clamping or pressing distances on the assembly line.
Variable Positioning
Accommodate multiple part sizes on a single conveyor line by adjusting the rear stopper to vary the effective travel distance.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-50S the Right Cylinder?
Choose this 80 mm bore when your application requires substantial force—stepping down to a 63 mm bore drops the 0.5 MPa pull force to 1402 N, whereas this model provides 2268 N. The 50 mm adjustment range is ideal for product-size changeovers on a production line, allowing operators to reposition the end-stop during setup rather than physically swapping the entire cylinder for a fixed-stroke SAI variant. Because the rear adjuster acts only as a travel stop, load-holding without live air requires a separate SAIL or BSAI locking cylinder.
When integrating this ISO 15552 interchangeable cylinder, confirm your setup matches the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), noting that FB, CA, CB, and CR mounts are omitted from this series. The PT tapered port threads ensure a tight pneumatic seal at the G3/8 fitting.
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 SAIJ80X120-50S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. It can deliver up to 4523 N push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 120 mm nominal stroke by up to 50 mm, creating a 70-120 mm usable travel window. This stopper only limits travel and does not lock the load without continuous air pressure.
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