Airtac SAIJ80 Adjustable Cylinder SAIJ80BX450-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX450-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 450mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke450 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX450-20S
The AirTAC SAIJ80X450-20-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. By turning the rear screw, you achieve a precise 430-450mm usable travel window without bolting on external stops.
This adjustable-stroke design is ideal for fine-tuning end positions during machine commissioning or product changeovers. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches. The rear adjuster acts purely as a travel stop to set deceleration, meaning it will not hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX450-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX450-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 450 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX450-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×450 | 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 SAIJ80BX450-20S Is Used
Product Changeover
Dial in the 430-450mm travel window during packaging line format changes to accommodate different carton sizes without replacing hardware.
Machine Setup
Fine-tune the exact end-of-stroke position during initial commissioning to prevent mechanical crashes and optimize tooling alignment.
Variable End Stops
Use the rear adjuster to create custom retraction depths for automated clamping fixtures that handle multiple part heights.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX450-20S the Right Cylinder?
The adjustable 430-450mm travel window is perfect for variable end-stop requirements, allowing you to dial in the exact 20mm trim on the fly instead of swapping to a fixed-stroke SAI cylinder. For an exact ISO 15552 replacement match, verify the 450mm stroke, 20mm adjustment, PT G3/8 port, and the -S magnet.
Because the 450mm stroke is substantial, the 25mm rod and M20x1.5 thread provide excellent rigidity, but an external guide is still recommended to handle side loads over this long unsupported distance. If your setup requires true load-holding without continuous live air, note that this cylinder's adjuster is not a lock; you should explore an AirTAC SAIL or BSAI model instead. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80BX450-20S FAQ
It reaches a maximum thrust of 513 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the nominal 450mm stroke by up to 20mm, creating a 430-450mm usable travel window. This stopper sets the travel end and deceleration but does not lock the load without live air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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