Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 180mm 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
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-75S
The AirTAC SAIJ80X180-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear mechanical stroke adjuster. It features a built-in magnet for position sensing and delivers a robust 2513N push force at 0.5 MPa. The carbon steel piston rod has an M20x1.5 thread, providing a strong interface for high side-load capacity. The barrel is extruded aluminum with sensor grooves on both sides for flexible switch mounting.
With a 75mm adjustment range, this SKU allows you to dial back the 180mm nominal stroke to anywhere within a 105-180mm usable travel window. This wide tuning band is ideal for product changeovers on a production line, letting you set exact retract end-positions at commissioning without swapping the cylinder or adding external stops. The rear screw acts purely as a travel stop to set deceleration alongside the standard air cushions; it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 180 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 SAIJ80X180-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×180 | 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 SAIJ80X180-75S Is Used
Variable End-Stop Machining
Fine-tune the retract distance from 105 to 180mm during machine setup to accommodate multiple part lengths on a single fixture without changing cylinders.
Product Changeover Diverter
Quickly adjust the stroke stop on a packaging line diverter when switching between different box sizes, ensuring precise routing without external stopper hardware.
Adjustable Pressing Station
Dial in the exact end-of-stroke position for an assembly press, using the 75mm adjustment range to compensate for tooling wear or varying material thicknesses.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-75S the Right Cylinder?
Choose this 80mm bore when your application requires more thrust than a 63mm cylinder (which provides 1402N pull at 0.5 MPa) but does not need the full 3681N pull force of a 100mm unit. The 75mm adjustment window is significantly larger than standard 10mm or 20mm variants, making this specific SKU the optimal choice for machines that frequently process varying product sizes and need a highly variable end-stop. If you require the load to stay clamped or held in place during a total air loss event, note that the adjuster is not a lock; you would need to step up to an AirTAC SAIL or BSAI cylinder, or use an external pilot-operated check valve.
To replace an existing ISO 15552 cylinder, match the 80mm bore, 180mm stroke, 75mm adjustment, PT tapered port threads, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR brackets. The -S magnet works precisely with AirTAC CMSE reed switches and DMSE solid-state electronic sensors.
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 SAIJ80X180-75S FAQ
The rear adjuster screw lets you mechanically shorten the 180mm nominal stroke, providing a usable travel window of 105 to 180mm. This allows you to set the exact retract end-position at commissioning or during product changeovers without swapping the cylinder.
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. It operates at speeds between 30 and 800 mm/s.
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