Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 115mm 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
- Stroke115 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-20S
The AirTAC SAIJ80X115-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 115 mm stroke that can be fine-tuned down by up to 20 mm, creating a precise 95-115 mm usable travel window. In the 80 mm bore class, it delivers a substantial 3518 N push force at 0.7 MPa, making it well-suited for heavier actuation tasks.
This variant includes a magnet for position sensing and uses a carbon steel piston rod with an M20x1.5 thread. The extruded aluminum barrel features sensor grooves on both sides, allowing you to mount either CMSE reed or DMSE electronic switches exactly where needed. The rear adjuster acts purely as a mechanical stop to dial in the end position during commissioning; it does not lock the load, so live air is required to maintain position.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 115 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 SAIJ80X115-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×115 | 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 SAIJ80X115-20S Is Used
Product Changeovers
Dial in the 95-115 mm travel window during format size changes on packaging lines without swapping out the entire actuator.
End-Stop Calibration
Use the rear mechanical stopper to precisely set the retraction end position during machine commissioning for critical assembly presses.
Variable Diverting
Adjust the stroke on the fly to accommodate different package sizes on a conveyor sorting system, ensuring accurate physical contact.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-20S the Right Cylinder?
Select this 80 mm bore cylinder when your application requires high thrust, such as the 2513 N push force at 0.5 MPa, but demands final end-position tuning without adding external stops. If you need less force, stepping down to a 63 mm bore yields 1559 N at 0.5 MPa, whereas moving up to a 100 mm bore provides 3927 N. The adjustable 95-115 mm travel window is perfect for product changeovers on a line. To match this ISO 15552 footprint, ensure you specify the PT port thread, the -S magnet option, and a mounting style from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the stroke is 115 mm, side-load is minimal, but always guide the rod end to prevent binding. For load-holding without air pressure, choose a SAIL or BSAI cylinder instead of relying on the adjuster.
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 SAIJ80X115-20S FAQ
At an operating pressure of 0.7 MPa, this 80 mm bore cylinder generates a push force of 3518 N and a pull force of 2268 N. At 0.5 MPa, the push force is 2513 N.
The rear adjuster screw allows you to shorten the effective travel from the 115 mm nominal stroke down to as little as 95 mm. This provides a 95-115 mm adjustable window for fine-tuning the retraction end position at commissioning, but it functions as a stop and not a load lock.
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