Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-50S 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 SAIJ80AX450-50S
The AirTAC SAIJ80X450-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N pull and 3518N push at 0.5 MPa. It features a SUS420J2 stainless steel rod and a PT tapered port. The built-in magnet enables position sensing with AirTAC CMSE reed and DMSE electronic switches.
The 50mm adjustment mechanism creates a 400-450mm usable travel window, allowing precise end-position tuning during commissioning without adding external stops. This model includes variable air cushions at both ends and uses the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-50S |
|---|---|
| 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 SAIJ80AX450-50S
| 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 SAIJ80AX450-50S Is Used
Machine Setup Changeover
Dial in the exact 400-450mm end position during line commissioning or product size changes without physically swapping the cylinder.
Variable End-Stop Positioning
Fine-tune the retract stroke by up to 50mm to accommodate multi-format packaging or varying material thicknesses on the fly.
Long-Stroke Assembly Press
Leverage the 3518N push force at 0.5 MPa over a long travel distance, using the rear screw to set precise mechanical stops.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX450-50S the Right Cylinder?
Choose this 80mm bore when an application requires higher thrust than the 63mm bore (1402N pull at 0.5MPa) but less than the 100mm bore (3681N pull). The adjustable 400-450mm travel window is ideal for product changeovers, providing a variable end-stop instead of swapping a fixed-stroke SAI cylinder. Because the 450mm stroke is long, an external guide is recommended to handle side loads despite the robust M20x1.5 rod thread.
The rear adjuster acts only as a travel stop and does not hold the load without live air pressure; for true fail-safe load holding, select an SAIL or BSAI cylinder. As a dimensionally interchangeable ISO 15552 cylinder, replacement requires matching the 80mm bore, 450mm stroke, 50mm adjustment, PT port, and -S magnet.
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 SAIJ80AX450-50S FAQ
It provides 2513N pull and 3518N push at 0.5 MPa, reaching 4523N push at 0.9 MPa. The operational speed range is 30-800 mm/s.
The rear adjuster screw trims the effective travel, creating a 400-450mm usable stroke window. It functions as a mechanical stop for end-position tuning and is not a lock; the cylinder requires live air to hold a load.
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