Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-75 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke185 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-75
The AirTAC SAIJ80X185-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. Its defining feature is a 75mm adjustment range that creates a 110-185mm usable travel window, allowing you to dial in the exact retract end-position during commissioning without swapping hardware. The extruded aluminum barrel includes sensor grooves on both sides, though this configuration omits the magnet, meaning position sensing is not enabled out of the box.
This model features a robust 25mm carbon steel rod and a PT tapered port thread. The rear adjuster acts purely as a mechanical stop to set the travel limit and works in tandem with the standard variable air cushions at both ends. It does not function as a locking device, so the cylinder cannot hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-75 |
|---|---|
| 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 | 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 SAIJ80X185-75
| 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 SAIJ80X185-75 Is Used
Product Changeovers
Leverage the 110-185mm travel window to quickly adapt machinery for different sized parts on the fly without physically replacing the cylinder.
Commissioning Calibration
Fine-tune the retract end-position during initial machine setup to achieve precise mechanical alignment without adding external stopper blocks.
Variable Stops
Adjust the rear stopper screw to alter the pusher stroke distance on a conveyor system, accommodating varying package lengths.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X185-75 the Right Cylinder?
Choose this 80mm bore when an application requires substantial thrust, such as the 2513N push or 2268N pull figures at 0.5 MPa, but demands flexible end-stop tuning. If your setup only requires 1559N of push force at 0.5 MPa, stepping down to a 63mm bore saves space; if you need 3927N, move up to a 100mm bore. The 75mm adjustment window is ideal for product-size changeovers on a packaging line, providing far more setup flexibility than a fixed-stroke SAI cylinder.
When replacing an ISO 15552 cylinder, match the 80mm bore, 185mm nominal stroke, PT port threads, and the required mounting set (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Because the 25mm rod handles side loads well but the stroke is 185mm, ensure external guides support any heavy off-center loads. For applications requiring true load-holding without continuous air pressure, select a SAIL or BSAI cylinder instead of relying on this adjuster.
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 SAIJ80X185-75 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At its maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster screw acts as a mechanical stop that shortens the effective stroke from its 185mm nominal length. This creates a 110-185mm usable travel window for fine-tuning end positions, but it does not lock the load without live air pressure.
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