Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-40 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 SAIJ80AX450-40
The AirTAC SAIJ80X450-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a usable travel window of 410-450 mm. Delivering 2513 N of push force at 0.5 MPa, it handles demanding positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible detection mounting.
This unit uses a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and features PT tapered port threads. The rear stopper screw allows precise end-position tuning at commissioning without swapping the cylinder or adding external stops. It supports a speed range of 30-800 mm/s and includes variable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-40 |
|---|---|
| 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 SAIJ80AX450-40
| 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 SAIJ80AX450-40 Is Used
Machining Setup Tuning
Fine-tune the 410-450 mm travel window during machine commissioning to achieve exact clamping positions without machining custom spacers.
Product Changeover
Adjust the retract end-stop quickly on packaging lines when handling different package lengths, minimizing downtime between production runs.
Variable End-Stop Positioning
Use the 40 mm adjustment range to dial in the exact retraction point for automated assembly presses requiring precise depth control.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-40 the Right Cylinder?
Choose this 80 mm bore when an application requires more force than the 63 mm option (1559 N push at 0.5 MPa) but less bulk than the 100 mm size. The 40 mm adjustment range is ideal for product changeovers, letting operators dial in the exact retract distance on the fly. Because the stroke is 450 mm, an external guide is recommended to manage side loads and prevent rod binding over the long unsupported travel.
When specifying an ISO 15552 replacement, match the 80 mm bore, 450 mm nominal stroke, 40 mm adjustment, PT G3/8 port, and the Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting interfaces. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe holding, consider an SAIL or BSAI cylinder.
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 SAIJ80AX450-40 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. It operates at speeds ranging from 30 to 800 mm/s.
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective stroke by up to 40 mm from the 450 mm nominal length. This creates a 410-450 mm usable travel window for fine-tuning the end position without replacing the cylinder.
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