Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 55mm 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
- Stroke55 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-30
The AirTAC SAIJ80X55-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. By turning the external rear screw, you can trim the nominal 55mm travel back by up to 30mm, creating a precise 25-55mm usable stroke window. This built-in adjustability allows you to fine-tune end positions at commissioning without swapping hardware or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides, and the piston rod uses SUS420J2 stainless steel for enhanced corrosion resistance.
It features a 25mm carbon steel core rod and PT tapered port threads. The rear adjuster acts solely as a travel stop to set the retraction endpoint and relies on the integrated air cushions for end-of-stroke deceleration. It does not hold the load without live air pressure; for fail-safe load holding, consider the SAIL or BSAI series. This model supports a speed range of 30-800 mm/s and accepts the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 55 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 SAIJ80AX55-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×55 | 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 SAIJ80AX55-30 Is Used
Machine Setup and Changeover
Dial in the exact end-of-stroke position during product size changeovers without machining new spacer blocks or replacing the cylinder.
Variable End-Stop Positioning
Utilize the 25-55mm travel window to precisely tune the retract distance for delicate clamping or positioning tasks.
Assembly Line Tuning
Fine-tune actuator endpoints on the fly during initial commissioning to perfect machine timing and reduce mechanical shock.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX55-30 the Right Cylinder?
Choose this 80mm bore when the 50mm bore class (offering 982N push at 0.5 MPa) is insufficient, but you want to avoid the size and air consumption of the 100mm class. The 30mm adjustment range is ideal for product changeovers on a packaging line, letting you dial in the exact 25-55mm travel window on the fly. Since the total stroke is 55mm, side-loading is minimal, but always ensure the load is guided to prevent binding. To match this cylinder as an ISO 15552 replacement, specify the 80mm bore, 55mm stroke, 30mm adjustment, PT port thread, and the desired mounting style. Note that no magnet is specified for this configuration, so position sensing via CMSE or DMSE sensors is not enabled out of the box.
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 SAIJ80AX55-30 FAQ
At 0.5 MPa operating pressure, the 80mm bore provides 2513N of push force and 2268N of pull force. At the maximum pressure of 1.0 MPa, it can deliver up to 513 kgf.
The rear adjuster screw lets you shorten the 55mm nominal stroke by up to 30mm, providing a usable travel window of 25 to 55mm. It functions as a mechanical stop for end-position tuning and is not a locking device.
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