Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-20S 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 SAIJ80AX325-20S
The AirTAC SAIJ80X325-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers a robust 2513N push force at 0.5 MPa and incorporates a SUS420J2 stainless steel rod for superior side-load resistance and corrosion defense. The built-in magnet supports position sensing via CMSE reed or DMSE electronic switches.
This specific SKU provides a 325mm nominal stroke with a 20mm adjustment range, yielding a usable travel window of 305-325mm. It allows operators to fine-tune the retract end-position during commissioning or product changeovers without adding external stops. The extruded aluminum barrel includes dual sensor grooves, and the mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-20S |
|---|---|
| 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 SAIJ80AX325-20S
| 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 SAIJ80AX325-20S Is Used
Changeover Tuning
Dial in the exact retract position within the 305-325mm window during product size changeovers without swapping hardware.
Variable End Stops
Set precise product diversion points on a conveyor line, adjusting the stroke by up to 20mm to handle varying package dimensions.
Machine Setup
Fine-tune the end-of-travel position during initial machine commissioning to absorb mechanical tolerances without adding external stopper blocks.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX325-20S the Right Cylinder?
Select this 80mm bore cylinder when an application requires substantial thrust (2513N push at 0.5 MPa) alongside variable end-stop positioning. If your process demands less force, the 63mm bore offers 1559N; if you need higher output, the 100mm bore provides 3927N. Because the 325mm stroke exceeds typical compact lengths, ensure external guiding is used to prevent rod side-loading, as the 25mm piston rod and M20x1.5 thread can only absorb limited lateral stress.
This adjustable-stroke model is chosen over a fixed SAI cylinder when machinery requires iterative end-position tuning at setup. Note that the rear adjuster acts solely as a travel stop and does not hold the load without live air pressure; for true load-holding, consider the SAIL or BSAI series. This unit features PT tapered ports and operates at speeds of 30-800 mm/s.
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 SAIJ80AX325-20S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides a push force of 2513N and a pull force of 2268N. It can deliver up to 4523N push force at 0.9 MPa.
The rear adjuster screw allows you to shorten the effective stroke from its 325mm nominal length down to 305mm. This creates a 305-325mm usable travel window for fine-tuning the retract end position without replacing the cylinder.
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