Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-40S 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 SAIJ80AX325-40S
The AirTAC SAIJ80X325-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 285 to 325 mm. Delivering 3518 N of push force at 0.7 MPa, it handles heavy-duty positioning with precision. The extruded aluminum barrel features sensor grooves on both sides, and the -S magnet option supports position tracking via CMSE reed or DMSE electronic sensors.
This configuration includes an SUS420J2 stainless steel rod (code A) for improved corrosion resistance and PT tapered port threads. The rear adjuster screw acts strictly as a travel stop for end-position tuning during commissioning; it does not lock or hold the load without live air pressure. For applications requiring true load-holding, consider the SAIL or BSAI series.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-40S |
|---|---|
| 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 SAIJ80AX325-40S
| 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 SAIJ80AX325-40S Is Used
Product Changeover
Fine-tune the 285-325 mm travel window on packaging lines to accommodate varying carton sizes without physically swapping out the cylinder.
Machine Setup
Dial in the exact end-stop position during initial commissioning to perfect pressing operations, eliminating the need for custom machined spacer blocks.
Variable End Stops
Adjust the retract position dynamically on diverter mechanisms to handle different product profiles on the fly while maintaining high thrust.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-40S the Right Cylinder?
Selecting this 80 mm bore over a smaller 63 mm variant provides a significant thrust upgrade, jumping from 2182 N to 3518 N at 0.7 MPa. The adjustable stroke is chosen over a fixed SAI cylinder when machine setups require variable end-stops or product-size changeovers, allowing you to dial back the stroke by up to 40 mm without adding external stops. To match this ISO 15552 replacement exactly, specify the 80 mm bore, 325 mm stroke, 40 mm adjustment, PT ports, and the -S magnet. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because the 325 mm stroke is relatively long, the 25 mm rod diameter should still be paired with an external guide to prevent excessive side-loading and premature seal wear on unsupported loads.
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 SAIJ80AX325-40S FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 40 mm, creating a usable travel window of 285 to 325 mm. It acts as a mechanical stop to tune the end position; it is not a lock and will not hold the load without live air pressure.
At an operating pressure of 0.7 MPa, the 80 mm bore generates 3518 N of push force and 2268 N of pull force. The cylinder operates at speeds between 30 and 800 mm/s.
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