Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 180mm 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
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-50S
The AirTAC SAIJ80X180-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a 0.5 MPa pull force of 2268 N and a push force of 2513 N, utilizing a 25 mm carbon steel rod with an M20x1.5 thread. The integrated -S magnet enables position detection with AirTAC CMSE reed and DMSE electronic sensors.
With a 50 mm adjustment range, this model transforms the 180 mm nominal stroke into a 130-180 mm usable travel window. This built-in rear stopper allows precise end-position tuning at commissioning without adding external stops. The adjuster acts solely as a travel stop and does not hold the load without live air pressure, so applications requiring true load-holding without continuous air should use an SAIL or BSAI cylinder.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 180 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 SAIJ80X180-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×180 | 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 SAIJ80X180-50S Is Used
Product Changeover Lines
Dial the rear stopper back within the 130-180 mm window to accommodate different package lengths on a packaging line without physically swapping the cylinder.
End-Stop Calibration
Fine-tune the exact retract position during machine commissioning to perfect a pressing or clamping operation without adding external mechanical stops.
Variable Diverter Arm
Adjust the travel of a conveyor sorting arm on the fly to handle varying product sizes, relying on the 25 mm rod to handle the side loads.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-50S the Right Cylinder?
Choose this 80 mm bore adjustable cylinder when your assembly requires 2268 N of pull force at 0.5 MPa, or step down to the 50 mm bore if your application only needs 825 N of pull force. The SAIJ80X180-50-S is selected over a fixed-stroke SAI when a machine setup demands a variable end-stop for rapid product changeovers. It mounts via a reduced SAIJ set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. To replace an ISO 15552 cylinder, match the 80 mm bore, 180 mm stroke, 50 mm adjustment, PT tapered ports, and the -S magnet requirement.
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 SAIJ80X180-50S 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 the maximum 1.0 MPa pressure, it delivers a push force of 513 kgf.
The rear adjuster screw lets you shorten the 180 mm nominal stroke by up to 50 mm, creating a 130-180 mm usable travel window. It functions as a mechanical stop to tune the end position and is not a lock, meaning it will not hold the load without live air pressure.
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