Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-75S 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 SAIJ80X290-75S
The AirTAC SAIJ80X290-75-S is a double-acting ISO 15552 profile cylinder featuring a built-in rear stroke adjuster. It provides a 215-290 mm usable travel window by allowing you to dial back the 290 mm nominal stroke by up to 75 mm. Equipped with a -S magnet, it works directly with CMSE reed and DMSE electronic sensors mounted into the dual-side barrel grooves. The carbon steel piston rod and M20x1.5 thread offer robust durability for demanding setups.
This model delivers 2513 N of pull force at 0.5 MPa and reaches 4523 N at 0.9 MPa. The external rear stopper acts purely as a travel end deceleration device, meaning it cannot hold a load without live air pressure. For true fail-safe load holding, users should integrate an external rod lock or select the related BSAI clamp-lock series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-75S |
|---|---|
| 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 SAIJ80X290-75S
| 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 SAIJ80X290-75S Is Used
Product Changeover
Quickly fine-tune the 215-290 mm travel window during line changeovers to accommodate different package lengths without changing the cylinder.
Machine Setup
Dial in the exact end-stop position during commissioning, using the 75 mm rear adjustment to avoid adding external mechanical stops.
Variable End Stops
Ideal for diverter gates on conveyors where the retraction point needs occasional adjustment to handle varying product dimensions.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-75S the Right Cylinder?
Choose this adjustable-stroke model when your machine setup requires frequent product-size changeovers or precise end-position tuning without swapping out the entire cylinder. The 80 mm bore provides a strong 2513 N pull at 0.5 MPa; if your application requires less force, stepping down to a 63 mm bore yields 1402 N, while moving up to a 100 mm bore offers 3681 N. The PT tapered port and G3/8 thread size match the standard 80 mm bore specification.
Because the 290 mm stroke is relatively long, an external guide is recommended to prevent excessive side-loading on the unsupported rod. This SAIJ configuration supports the reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. It operates efficiently at speeds between 30 and 800 mm/s.
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 SAIJ80X290-75S FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 75 mm, creating a 215-290 mm travel window. It acts as a mechanical stop for end-position tuning and does not lock the load without live air pressure.
At 0.5 MPa, it provides 2513 N of pull force and 2268 N of push force. At 0.9 MPa, the push force increases to 4523 N.
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