Airtac SAIJ80 Adjustable Cylinder SAIJ80AX65-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX65-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 65mm 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
- Stroke65 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX65-20
The AirTAC SAIJ80X65-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that lets you dial back the 65mm nominal travel by up to 20mm, creating a precise 45-65mm usable window. It delivers a robust 2513N push force at 0.5MPa, making it well-suited for medium-to-heavy actuation tasks. The extruded aluminum barrel includes sensor grooves on both sides, and the rod is constructed from SUS420J2 stainless steel for enhanced corrosion resistance.
This model features a G3/8 PT tapered port and a 25mm piston rod with an M20x1.5 thread, providing a rigid interface that handles side loads effectively. It uses the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) while omitting FB, CA, CB, and CR options. The rear adjuster acts strictly as a travel stop for end-position tuning, not a load-holding lock.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX65-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX65-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 65 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 SAIJ80AX65-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×65 | 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 SAIJ80AX65-20 Is Used
Machine Setup & Changeover
Fine-tune the 45-65mm travel window during product size changeovers on a packaging line without replacing the cylinder or bolting on external stops.
Variable End-Stop Tuning
Dial in the exact retract position during commissioning using the rear adjusting screw, perfect for aligning press fits or clamping stations.
Medium-Heavy Actuation
Leverage the 2513N push force at 0.5MPa for moving heavier jigs or workpieces, relying on the SUS420J2 rod for durability in industrial environments.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX65-20 the Right Cylinder?
Choose this 80mm bore when a 50mm bore's 982N push force at 0.5MPa is insufficient, but you want to avoid the larger 100mm bore's 3927N bulk. The adjustable stroke is ideal for machine setup and product changeover, allowing you to fine-tune the end position without swapping cylinders or adding external stops. Because the stroke is under 300mm, external side-load guides are less critical, though the 25mm SUS420J2 rod still handles standard lateral forces well. For load-holding without live air pressure, consider the SAIL or BSAI series instead of relying on the rear stopper.
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 SAIJ80AX65-20 FAQ
The 65mm nominal stroke can be adjusted back by up to 20mm, providing a usable travel window of 45-65mm. It generates a push force of 2513N and a pull force of 2268N at 0.5MPa.
No, the rear adjuster functions as a travel stop to fine-tune the end position, not as a lock or brake. It cannot hold a load without live air pressure; for fail-safe load holding, use the SAIL or BSAI cylinder series.
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