Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-50S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX185-50S 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 SAIJ80AX185-50S
The AirTAC SAIJ80X185-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 185 mm travel by up to 50 mm. This creates a precise 135-185 mm usable end-position window, ideal for fine-tuning during commissioning without swapping out the physical cylinder.
This specific SKU features an SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a built-in magnet (-S) for seamless integration with AirTAC CMSE reed and DMSE electronic solid-state sensors. The extruded aluminum barrel maintains standard ISO 15552 mounting dimensions, while the rear stopper acts purely as a travel limit and does not lock the load without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-50S |
|---|---|
| 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 SAIJ80AX185-50S
| 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 SAIJ80AX185-50S Is Used
Product Changeover
Rapidly adjust the 135-185 mm travel window during packaging line format changes to accommodate different carton depths without changing hardware.
Machine Setup
Fine-tune the exact end-of-stroke position during initial commissioning to dial in pressing or clamping forces precisely.
Variable End Stops
Act as an adjustable diverter on a conveyor system, allowing the stroke length to be modified on the fly for different package sizes.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX185-50S the Right Cylinder?
The 50 mm adjustment range is particularly valuable on lines running mixed product sizes, allowing operators to change the end-stop position rapidly during changeovers instead of adding external mechanical stops. Because the nominal stroke is under 300 mm, side-load risks are manageable, though the robust 25 mm rod and M20x1.5 thread naturally tolerate higher bending moments than smaller bores.
For a direct ISO 15552 replacement match, ensure you specify the 80 mm bore, 185 mm stroke, 50 mm adjustment, PT tapered port thread, and the -S magnet option. If your machine requires true load-holding without constant air pressure, note that this cylinder's rear adjuster is only a stop; you would need to specify an AirTAC SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
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 SAIJ80AX185-50S FAQ
At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster screw allows you to shorten the 185 mm nominal stroke by up to 50 mm, providing a usable travel range of 135 to 185 mm. This stopper only sets the end position and does not hold the load without live 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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