Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-75S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 325mm 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
- Stroke325 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-75S
The AirTAC SAIJ80X325-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 3518N push force at 0.7 MPa and features a built-in magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This model provides a usable travel window of 250 to 325 mm, allowing you to dial back the stroke by up to 75 mm during commissioning. The rear adjusting screw acts purely as a mechanical stop to fine-tune the retract end position without adding external stops. It is not a locking device, so the load is only held while live air pressure is applied.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 325 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 SAIJ80X325-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×325 | 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 SAIJ80X325-75S Is Used
Product Changeover
Dial in the exact 250 to 325 mm retract position for different product sizes without physically swapping cylinders or adding external stopper blocks.
Machine Setup
Fine-tune the end-of-stroke position during commissioning to perfect timing and crush distances, avoiding the need for custom spacer shims.
Variable End Stops
Adjust the travel window on automated conveyors to accommodate varying package lengths or pusher distances on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X325-75S the Right Cylinder?
Choose this 80mm bore when a 63mm cylinder falls short on thrust, offering 3518N push force at 0.7 MPa compared to the 2182N of a 63mm bore. The adjustable 250 to 325 mm travel window is ideal for product changeovers on a line, letting you reset end positions quickly without swapping the cylinder. For load-holding without continuous air pressure, use an SAIL air-released lock or BSAI clamp-lock instead of relying on the adjuster.
As a dimensionally interchangeable ISO 15552 cylinder, it replaces units with an 80mm bore, 325mm stroke, up to 75mm adjustment, PT tapered ports, and a magnet. It uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. Because the stroke is 325 mm, the 25mm rod and M20x1.5 thread provide good rigidity, but an external guide is recommended to handle side loads on long unsupported travel.
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 SAIJ80X325-75S FAQ
The rear adjuster screw lets you shorten the nominal 325 mm stroke by up to 75 mm, creating a usable travel window of 250 to 325 mm. It functions as a mechanical stop to tune the end position and does not lock the load.
At an operating pressure of 0.7 MPa, the SAIJ80X325-75-S generates 3518N of push force and 2268N of pull force. It can deliver up to 4523N push force at 0.9 MPa.
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