Airtac SAIJ80 Adjustable Cylinder SAIJ80X150-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X150-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 150mm 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
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X150-75
The AirTAC SAIJ80X150-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 75-150 mm usable travel window from its 150 mm nominal stroke. Delivering a robust 4523N of push force at 0.9 MPa, it bridges the gap between mid-size and heavy-duty actuation. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This SKU uses a 25 mm carbon steel rod with an M20x1.5 thread, providing high torsional stiffness for demanding setups. It carries a PT tapered G3/8 port and relies on 36 mm variable air cushions at both ends to manage kinetic energy. The rear screw mechanism acts purely as an end-position stop, meaning it will not hold a load safely without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X150-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X150-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 150 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 SAIJ80X150-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×150 | 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 SAIJ80X150-75 Is Used
Carton Size Changeover
Dial the stroke back from 150 mm down to 75 mm in seconds to accommodate varying package dimensions on a packaging line without physically swapping cylinders.
End-Position Tuning
Fine-tune the exact retract distance during machine commissioning to perfect a pressing or forming operation, avoiding the need for machined external stopper blocks.
Variable Diverting
Adjust the travel distance of a diverting arm on the fly to handle different product widths moving down a conveyor system.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X150-75 the Right Cylinder?
Choose this 80 mm bore when an application requires more thrust than the 50 mm size provides (1374N push at 0.5 MPa) but does not need the massive 7068N output of a 100 mm bore at 0.9 MPa. The 75 mm adjustment range is exceptionally wide, making this specific SKU ideal for packaging lines running multiple carton sizes, as the end-stop can be dialed back without swapping physical spacers. For operations needing true fail-safe load holding, an external rod lock or the AirTAC BSAI clamp-lock series is required, as the SAIJ adjuster only decelerates travel.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 150 mm stroke, 75 mm adjustment requirement, G3/8 PT port, and mounting choice. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, deliberately omitting the FB, CA, CB, and CR styles. Because the 150 mm stroke is below the 300 mm threshold, side-load stress on the 25 mm rod is minimal, though external guides remain recommended for heavy lateral 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 SAIJ80X150-75 FAQ
It features a rear adjusting screw that mechanically stops the piston short of its full 150 mm travel. You can trim the effective stroke back by up to 75 mm, creating a highly flexible 75-150 mm travel window. The screw acts as a hard stop and does not function as a lock or brake.
At a 0.9 MPa operating pressure, the SAIJ80X150-75 provides 4523N of push force and 4071N of pull force. It operates at speeds between 30 and 800 mm/s, supported by 36 mm variable air cushions at both ends.
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