Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-50S 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 SAIJ80AX325-50S
The AirTAC SAIJ80X325-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. It features an SUS420J2 stainless steel rod and a built-in magnet for position sensing. Because of the 50mm adjustment code, this 325mm nominal stroke can be fine-tuned down to a 275mm usable travel window without swapping hardware.
This rear screw acts purely as a travel stop to dial in end positions during machine setup, not as a load lock. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. It supports a restricted mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-50S |
|---|---|
| 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 SAIJ80AX325-50S
| 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 SAIJ80AX325-50S Is Used
Product Size Changeovers
Dial in the 275-325mm travel window instantly on packaging lines running different carton lengths, eliminating the need to physically swap cylinders during format resets.
Machine Setup Calibration
Fine-tune the exact end-of-stroke position during commissioning using the rear stopper, ensuring precise mechanical alignment without adding bulky external stops.
Variable End-Stop Diverter
Act as an adjustable diverter arm on a conveyor where the stopping distance must be occasionally tweaked based on the payload dimensions being routed.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-50S the Right Cylinder?
Choose this 80mm bore when an application requires more thrust than a 63mm cylinder (which provides 1559N push at 0.5 MPa) but less bulk than a 100mm option. The adjustable stroke is selected over a fixed SAI cylinder when a machine handles frequent product-size changeovers, allowing operators to set variable end stops on the fly. For any 325mm stroke, the M20x1.5 rod thread handles substantial side loads, but an external guide rail is still recommended to prevent rod binding over long unsupported travel.
To match this ISO 15552 interchangeable cylinder for a replacement, verify the 80mm bore, 325mm stroke, 50mm adjustment range, PT tapered port threads, and the -S magnet requirement. Remember that standard air cushions and the rear stopper do not hold loads without live air; for true load-holding, consider an AirTAC SAIL or BSAI variant.
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 SAIJ80AX325-50S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At a maximum 1.0 MPa, it can deliver up to 513 kgf.
The rear adjuster screw allows you to shorten the effective travel from the 325mm nominal stroke down to 275mm. This creates a 50mm usable window for fine-tuning the retract end position at commissioning, but it functions as a stop and not a load lock.
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