Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-30 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke450 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-30
The AirTAC SAIJ80X450-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 450 mm travel by up to 30 mm for a precise 420-450 mm operating window. Delivering 2513 N of push force at 0.5 MPa, it handles substantial pneumatic workloads. The rod is constructed from SUS420J2 stainless steel, offering enhanced resistance to corrosion and moisture compared to standard carbon steel.
This model features PT tapered port threads (G3/8) and variable air cushions at both ends to manage kinetic energy. The rear adjustment mechanism functions purely as a travel stop to fine-tune the end position during commissioning; it does not lock or hold the load without continuous live air pressure. For position-holding requirements, an external pilot-operated check valve or a dedicated SAIL lock cylinder is required.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-30 |
|---|---|
| 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 | 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 SAIJ80AX450-30
| 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 SAIJ80AX450-30 Is Used
Machine Changeover
Dial in the 420-450 mm stroke window during product size changes to set new end positions without physically swapping out the cylinder.
End-Stop Calibration
Fine-tune the retraction point at commissioning using the rear screw, eliminating the need to machine custom external spacers for the 450 mm travel.
Material Handling
Pushes heavy loads with 2513 N of force at 0.5 MPa, using the adjustable stop to compensate for slight variations in package dimensions.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-30 the Right Cylinder?
Selecting this 80 mm bore cylinder makes sense when your application requires 2513 N of push force at 0.5 MPa, bridging the gap between the 63 mm bore (1559 N) and the 100 mm bore (3927 N). The adjustable 420-450 mm window is ideal for machine setups requiring exact end-position tuning without adding external stopper blocks. If your force requirements are lower, stepping down to a 63 mm bore saves air volume and physical footprint.
When specifying an exact ISO 15552 replacement, match the 80 mm bore, 450 mm nominal stroke, 30 mm adjustment range, G3/8 PT ports, and the SUS420J2 rod material. Because the stroke is 450 mm, the 25 mm piston rod experiences leverage forces over a long extension; ensure you use an external guide rail to prevent side-loading damage. Mounting options are limited to 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 SAIJ80AX450-30 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At a maximum 1.0 MPa, the push force reaches 4523 N.
The rear adjuster acts as a mechanical stop, allowing you to shorten the effective travel from the nominal 450 mm down to 420 mm. It sets the end position but does not lock the load without live air pressure.
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