Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 165mm 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
- Stroke165 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-40
The AirTAC SAIJ80X165-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. Its defining trait is an external stopper that trims the nominal 165mm stroke back by up to 40mm, creating a usable travel window of 125-165mm. This allows precise end-position tuning during commissioning without swapping out the entire unit.
The extruded aluminum barrel features sensor grooves on both sides, though this specific configuration omits the magnet option. It uses a PT tapered port thread and a robust 25mm carbon steel rod with an M20x1.5 thread, providing excellent side-load resistance. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 165 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 SAIJ80X165-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×165 | 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 SAIJ80X165-40 Is Used
Product Changeovers
Dial in the 125-165mm travel window during format size changes on packaging lines without physically swapping cylinders.
End-Position Tuning
Fine-tune the retract end-stop during machine commissioning to achieve exact seating of 2513N clamping forces.
Adjustable Ejector
Vary the ejection distance on an assembly line by trimming the stroke up to 40mm to accommodate different part depths.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-40 the Right Cylinder?
Choose this 80mm bore when an application requires more thrust than the 50mm bore (which provides 982N push at 0.5 MPa) but does not need the full 3927N push of the 100mm variant. The adjustable 125-165mm travel window is ideal for product changeovers on a line, letting operators fine-tune the retract stop without adding external stops. Because the stroke is under 300mm, standard mounting handles the load without auxiliary guides.
When specifying an ISO 15552 replacement, match the 80mm bore, 165mm nominal stroke, 40mm adjustment, PT port thread, and carbon steel rod. Remember that the rear adjuster acts only as a travel stop and the air cushions handle deceleration; neither will hold a load without live air. For true load-holding without pneumatic pressure, consider an external rod lock or the AirTAC SAIL locking cylinder.
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 SAIJ80X165-40 FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The rear adjuster acts as a mechanical stop that shortens the 165mm nominal stroke by up to 40mm, providing a usable travel window of 125-165mm. It requires live air to function and does not lock the load in place.
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