Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-30
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX185-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 185mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke185 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-30
The AirTAC SAIJ80X185-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 185 mm travel that can be dialed back by up to 30 mm, yielding a precise 155-185 mm usable window for commissioning without external stops.
This variant uses a SUS420J2 stainless steel rod for superior corrosion resistance compared to standard carbon steel, and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, allowing direct mounting of CMSE reed or DMSE electronic sensors if position detection is added later. The rear stopper functions purely as a travel limiter and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 185 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×185 | 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 SAIJ80AX185-30 Is Used
Product Changeover Tuning
Quickly dial in the 155-185 mm travel window during packaging line format changes to accommodate varying carton sizes without swapping cylinders.
End-Stop Calibration
Fine-tune the retract end position during machine commissioning to prevent mechanical interference, using the rear screw rather than adding external shims.
Variable Positioning Stops
Set precise physical limits for indexing conveyors where the exact end-of-stroke contact point must be adjusted on the fly to meet process tolerances.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-30 the Right Cylinder?
The adjustable stroke is ideal for machine setups requiring frequent product changeovers, replacing the need for a fixed-stroke SAI cylinder when exact dimensions fluctuate.
For ISO 15552 replacement matching, verify the 80 mm bore, 185 mm nominal stroke, 30 mm adjustment range, PT port threads, and SUS420J2 rod material. Note that this model omits the -S magnet, so sensors must be added externally if needed. Because the stroke is 185 mm, side loads are moderate, but long unsupported applications still require an external guide. The rear adjuster acts only as a stop; for load-holding without live air, consider the SAIL or 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 SAIJ80AX185-30 FAQ
At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 185 mm nominal stroke by up to 30 mm, creating a 155-185 mm usable travel window. It only limits the travel end and does not lock or hold the load without continuous air pressure.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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