Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-30 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 SAIJ80AX550-30
The AirTAC SAIJ80X550-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel within a 520-550 mm window. Delivering 2513 N of push force at 0.5 MPa, it bridges the gap between mid-size and heavy-duty actuation. The piston rod is constructed from SUS420J2 stainless steel, offering enhanced corrosion resistance compared to standard carbon steel, and utilizes PT (tapered) port threads.
This adjustable-stroke design eliminates the need for external stops during machine setup or product changeover. The extruded aluminum barrel includes sensor grooves on both sides, ready for AirTAC CMSE reed and DMSE electronic sensors if position feedback is later required. It supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-30 |
|---|---|
| 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 SAIJ80AX550-30
| 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 SAIJ80AX550-30 Is Used
Machine Changeover
Dial in the 520-550 mm stroke window during product size changes without physically replacing the cylinder or adding external stopper blocks.
Variable End Stops
Fine-tune the retract position on a long-stroke conveyor diverter to accommodate varying package lengths on the fly.
Assembly Line Setup
Achieve precise end-position tuning during initial commissioning of a 80 mm bore automated assembly station.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-30 the Right Cylinder?
Choose this 80 mm bore when 50 mm (982 N push @0.5 MPa) is too weak but 100 mm (3927 N) is oversized. The 30 mm adjustment range is ideal for dialing in exact end positions at commissioning without swapping cylinders. Because the 550 mm stroke is long, the 25 mm rod diameter still requires an external guide to prevent excessive side-loading and premature seal wear.
The rear adjuster acts purely as a mechanical stop to set deceleration and end-position; it does not hold the load without live air. For dead-end load holding, select the SAIL (air-released lock) or BSAI (clamp-lock) series instead. This model is dimensionally interchangeable per ISO 15552.
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 SAIJ80AX550-30 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. It can deliver up to 4523 N push at 0.9 MPa.
The rear adjuster allows you to mechanically shorten the 550 mm nominal stroke by up to 30 mm, providing a usable travel window of 520 to 550 mm for fine end-position tuning.
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