Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-100
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-100 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 SAIJ80AX550-100
The AirTAC SAIJ80X550-100 is a double-acting, single-rod ISO 15552 profile cylinder featuring an integrated rear stroke adjuster. It provides a 550 mm nominal stroke that can be dialed back by up to 100 mm, yielding a 450-550 mm usable travel window for precise end-position tuning during commissioning. Equipped with a 25 mm SUS420J2 stainless steel rod and PT tapered port threads, it delivers 4523 N of push force at 0.9 MPa.
This adjustable-stroke design eliminates the need to swap cylinders or bolt on external stoppers when product sizes change. The rear adjuster acts purely as a mechanical travel stop and works alongside the standard variable air cushions at both ends to manage end-of-stroke deceleration. It uses a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-100 |
|---|---|
| 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 SAIJ80AX550-100
| 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 SAIJ80AX550-100 Is Used
Machine Changeover
Dial in the 450-550 mm travel window during product size transitions without physically swapping out the cylinder or adding external mechanical stops.
Long-Stroke Assembly
Handles 80 mm bore thrust across a 550 mm stroke for pressing or positioning, using the rear stopper to fine-tune the final end position.
Conveyor Diverter Setup
Adjusts the retract end-point on the fly to accommodate varying package lengths on a packaging line, ensuring precise diverting without downtime.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX550-100 the Right Cylinder?
Choose this 80 mm bore cylinder when your application requires 4523 N of push force at 0.9 MPa and a highly variable end-stop. The 100 mm adjustment range is perfect for machine changeovers, letting you shift the effective travel window from 450 to 550 mm without replacing the actuator. If you need less force, stepping down to a 63 mm bore yields 2805 N at 0.9 MPa; for heavier loads, a 100 mm bore provides 7068 N.
Because the 550 mm stroke is long, an external guide is recommended to prevent rod side-loading and premature wear. This actuator is dimensionally interchangeable per ISO 15552, featuring a G3/8 port, PT tapered threads, and no integrated magnet. Note that the rear adjuster and air cushions do not hold the load without live air; for fail-safe load holding, consider an external rod lock or the SAIL/BSAI series.
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 SAIJ80AX550-100 FAQ
This 80 mm bore cylinder delivers a push force of 4523 N and a pull force of 3681 N at 0.9 MPa. At 0.5 MPa, it provides 2513 N of push force and 2268 N of pull force.
The rear adjuster is a mechanical stopper that allows you to shorten the effective stroke by up to 100 mm, creating a 450-550 mm usable travel window. It sets the end position and must not be relied upon to hold a load without live air pressure.
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