Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-30 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 SAIJ80X120-30
The AirTAC SAIJ80X120-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down from a 120 mm nominal stroke to a 90 mm minimum, creating a precise 90-120 mm usable window. Part of the SAIJ adjustable-stroke family, it eliminates the need to swap cylinders or bolt on external stoppers during machine commissioning or product changeover. Delivering 2513 N of push force and 2268 N of pull force at 0.5 MPa, it is built to handle demanding actuation tasks.
This 80 mm bore actuator features a 25 mm carbon steel rod and a G3/8 PT tapered port, utilizing a 36 mm variable air cushion at both ends to decelerate the payload smoothly. The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE electronic switches. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting the FB, CA, CB, and CR foot and pivot brackets to streamline the adjustable rear assembly.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-30 |
|---|---|
| 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 SAIJ80X120-30
| 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 SAIJ80X120-30 Is Used
Machine Changeover Setup
Quickly reposition the end-stop by up to 30 mm when switching product sizes on a packaging line, avoiding the downtime of physically swapping out the entire actuator.
End-Position Calibration
Fine-tune the retract stroke during initial commissioning to achieve exact 90 to 120 mm kinematic positioning, compensating for mechanical tolerance stack-up.
Variable Pitch Indexing
Adapt the travel distance on automated assembly equipment to handle slightly different part dimensions without redesigning the motion control system.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X120-30 the Right Cylinder?
Choose this 80 mm bore cylinder when your application requires substantial thrust—2513 N push at 0.5 MPa—but you need the flexibility to dial in the exact end-of-stroke position within a 90-120 mm window without physically changing the actuator. If your force requirements are lower, stepping down to a 63 mm bore yields 1559 N of push force, whereas moving up to a 100 mm bore provides 3927 N. The adjustable rear stopper is strictly a travel limit and does not hold the load without live air pressure; for true fail-safe load holding, consider the SAIL or BSAI series instead.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 120 mm nominal stroke, 30 mm adjustment range, G3/8 PT port, and your required mounting interface. Because the 120 mm stroke is relatively short, side-loading stress on the 25 mm rod is minimal, but any unsupported load should still use an external guide rail to prevent premature seal wear.
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 SAIJ80X120-30 FAQ
At a 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 up to 513 kgf.
The rear adjusting screw acts as an external stopper that mechanically limits the piston's travel. For this SAIJ80X120-30 model, you can shorten the effective stroke from 120 mm down to 90 mm, giving you a 90-120 mm adjustable window during setup.
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