Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 550mm 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
- Stroke550 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-30S
The AirTAC SAIJ80X550-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N push force at 0.5MPa and features a 520-550mm usable travel window, letting you trim the effective stroke by up to 30mm during commissioning. The SUS420J2 stainless steel rod (code A) provides excellent corrosion resistance, while the integrated magnet (-S) supports position sensing.
This model uses PT tapered port threads (G3/8) and includes variable air cushions at both ends to decelerate the load smoothly. The rear adjuster acts purely as a mechanical stop to fine-tune the end position without needing external stops, though it does not lock the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 550 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 SAIJ80AX550-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×550 | 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 SAIJ80AX550-30S Is Used
Product Changeovers
Dial in the 520-550mm travel window during format changes on a packaging line, using the rear screw to set exact end positions without swapping hardware.
Machine Setup Calibration
Fine-tune the extended stop position during initial commissioning to achieve precise mechanical alignment, avoiding the need for external shims.
Variable End Stops
Accommodate varying package sizes on a material handling conveyor by adjusting the retract stop within the 30mm range on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-30S the Right Cylinder?
Select this 80mm bore cylinder when an application requires high thrust (2513N push at 0.5MPa) alongside precise end-position tuning. The adjustable 520-550mm window is ideal for machine setups requiring product changeovers, replacing the need to swap out a fixed-stroke SAI cylinder. If your force requirements are lower, stepping down to a 63mm bore yields 1559N, whereas stepping up to a 100mm bore provides 3927N.
Because this 550mm stroke is substantial, the 25mm rod diameter should be paired with an external guide to prevent excessive side-loading and premature seal wear. To replace this cylinder with another ISO 15552 unit, match the 80mm bore, 550mm stroke, 30mm adjustment, PT G3/8 port, and -S magnet. For load-holding without continuous air pressure, consider an AirTAC SAIL or BSAI cylinder instead.
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 SAIJ80AX550-30S FAQ
At 0.5MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7MPa, the push force increases to 3518N.
The rear mechanical adjuster allows you to shorten the nominal 550mm stroke by up to 30mm, creating a 520-550mm usable travel window. This stopper only sets the end position and does not hold the load without live air pressure.
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