Airtac SAIJ80 Adjustable Cylinder SAIJ80AX375-75
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX375-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 375mm 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
- Stroke375 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX375-75
The AirTAC SAIJ80X375-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 2513N of push force at 0.5 MPa. It features a 25mm SUS420J2 stainless steel rod and PT tapered port threads. By utilizing the 75mm adjustment screw, you can dial back the nominal 375mm stroke to create a precise 300-375mm usable travel window without swapping out the entire unit.
This profile cylinder is designed for variable air cushioning at both ends to decelerate the load smoothly. Because the rear adjuster acts strictly as a mechanical stop rather than a locking mechanism, it cannot hold a load without continuous live air pressure. For applications requiring true load-holding, an external rod lock or the AirTAC BSAI clamp-lock series would be necessary.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX375-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX375-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 375 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 SAIJ80AX375-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×375 | 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 SAIJ80AX375-75 Is Used
Product Changeover
Quickly adapt a packaging line to different carton depths by dialing the rear stopper back from 375mm to 300mm, avoiding physical cylinder swaps.
End-Position Tuning
Fine-tune the exact extended reach of a 2513N push mechanism during machine commissioning to achieve perfect alignment without external shims.
Variable Diverting
Adjust the stroke window on a diverter arm to accommodate varying product widths on a conveyor without reprogramming the pneumatic valves.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX375-75 the Right Cylinder?
Selecting this 80mm bore cylinder makes sense when your application requires the 2513N thrust at 0.5 MPa and demands flexible end-position tuning during commissioning or product changeover. If your setup only requires 1559N of push force, stepping down to the 63mm bore offers a more compact footprint, whereas moving up to the 100mm bore provides 3927N for heavier loads. The adjustable stroke prevents the need to inventory multiple fixed-stroke SAI cylinders for slightly varying product sizes.
When configuring an ISO 15552 replacement, match the 80mm bore, 375mm stroke, 75mm adjustment range, PT port threads, and the SUS420J2 rod material. Note that this unit omits the -S magnet, so it will not trigger AirTAC CMSE or DMSE sensors without modification. Since the 375mm stroke is relatively long, the 25mm rod will experience increased bending moments; always utilize an external guide to prevent excessive side-loading and premature seal wear. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR 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 SAIJ80AX375-75 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At a maximum 0.9 MPa, the push force increases to 4523N.
The rear mechanical screw allows you to shorten the effective travel from the 375mm nominal stroke down to a minimum of 300mm. It acts as a hard stop to set the end position and does not lock the load without live air.
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