Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-20S 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 SAIJ80X165-20S
The AirTAC SAIJ80X165-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 4523N push force at 0.9MPa and features a 25mm carbon steel rod with M20x1.5 threading. By turning the rear adjustment screw, you can trim the nominal 165mm travel back by up to 20mm, creating a precise 145-165mm usable stroke window for exact end-position tuning during commissioning.
This variant includes a magnetic piston for position sensing with AirTAC CMSE reed or DMSE solid-state switches, which seat cleanly into the dual-side sensor grooves on the extruded aluminum barrel. It uses PT tapered port threads (G3/8) and relies on adjustable air cushions at both ends to decelerate the load. The rear stopper acts purely as a travel limit and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-20S |
|---|---|
| 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 SAIJ80X165-20S
| 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 SAIJ80X165-20S Is Used
Machine Changeover Setup
Dial in the 145-165mm travel window during product size transitions to set exact pressing depths without replacing the actuator.
Variable End-Stop Positioning
Use the rear screw to fine-tune the retract end position precisely during machine commissioning, accommodating mechanical tolerances.
Heavy Assembly Pressing
Leverage the 4523N push force at 0.9MPa for driving rigid components, using the adjustment to vary the final press distance.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X165-20S the Right Cylinder?
Select this 80mm bore cylinder when your application requires heavy thrust within a compact adjustable window. If you need slightly less force, stepping down to a 63mm bore yields 2805N push at 0.9MPa; stepping up to a 100mm bore provides 7068N. Choose this SAIJ model over a fixed-stroke SAI when you need on-the-fly end-stop tuning for product changeovers without swapping cylinders or adding external stops. Because the stroke is 165mm, side-load risks are moderate, but always guide the load externally for smooth operation. For load-holding without live air, select a SAIL or BSAI cylinder instead, as the SAIJ adjuster is not a lock. To match this ISO 15552 footprint exactly, specify: 80mm bore, 165mm stroke, 20mm adjustment, PT G3/8 ports, Basic/FA/LB/TC/FTC/TCM1/TCM2 mountings, and a magnet for CMSE/DMSE sensors.
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 SAIJ80X165-20S FAQ
At 0.9MPa operating pressure, this 80mm bore cylinder provides a push force of 4523N and a pull force of 2268N. It can deliver a maximum force of 513 kgf at 1.0MPa.
The rear adjuster screw lets you shorten the nominal 165mm stroke by up to 20mm, creating a 145-165mm usable travel window. This allows precise end-position tuning at commissioning without external stops, though the adjuster only acts as a travel limit and does not lock the load.
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