Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 290mm 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
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-50S
The AirTAC SAIJ80X290-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the 290 mm nominal travel by up to 50 mm. This yields a usable 240-290 mm end-position window, enabling precise fine-tuning at commissioning without swapping out the entire unit. Equipped with a -S magnet, it integrates seamlessly with AirTAC CMSE reed and DMSE electronic sensors housed in the dual-side barrel grooves.
Delivering robust performance, this 80 mm bore generates 4523 N of push force and 2268 N of pull force at 0.9 MPa. The carbon steel rod with an M20x1.5 thread handles high side loads well, while the PT tapered port ensures a tight pneumatic connection. The rear adjuster acts purely as a travel stop for deceleration setup, meaning it will not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 290 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 SAIJ80X290-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×290 | 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 SAIJ80X290-50S Is Used
Product Changeover
Dial in the 240-290 mm travel window on the fly to accommodate varying package sizes on a single packaging line.
End-Position Tuning
Fine-tune the retract stroke during machine commissioning without machining custom external stopper blocks.
Assembly Press Setup
Adjust the precise end-stop distance for pressing applications where the exact depth varies slightly per batch.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-50S the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI when your application requires variable end-stops or frequent product-size changeovers. If you need less force, stepping down to a 63 mm bore yields 2805 N of push at 0.9 MPa; conversely, moving up to a 100 mm bore provides 7068 N. Because the 290 mm stroke is relatively long, an external guide rail is recommended to prevent rod binding under heavy lateral loads.
For load-holding requirements without continuous air pressure, note that the SAIJ rear adjuster and air cushions function only as travel stops, not locks. In such cases, select an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or install an external pilot-operated check valve. This SAIJ model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and is dimensionally interchangeable per ISO 15552.
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 SAIJ80X290-50S FAQ
At 0.9 MPa operating pressure, this 80 mm bore cylinder provides 4523 N of push force and 2268 N of pull force. It reaches a maximum of 513 kgf at 1.0 MPa.
An external screw stopper at the rear of the cylinder trims the effective stroke by up to 50 mm. This creates a usable travel window between 240 mm and 290 mm, allowing you to set the exact retract end-position without changing the cylinder.
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