Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-40 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 SAIJ80X115-40
The AirTAC SAIJ80X115-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. With a nominal 115mm stroke and a 40mm adjustment range, it provides a usable travel window of 75-115mm. This built-in rear stopper allows operators to dial in the exact retraction end-position during commissioning without adding external physical stops or swapping out the entire cylinder.
Featuring a 25mm carbon steel piston rod and M20x1.5 rod thread, this unit handles robust side loads while operating at speeds of 30-800mm/s. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches. It supports a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found on some standard variants.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-40 |
|---|---|
| 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 SAIJ80X115-40
| 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 SAIJ80X115-40 Is Used
Product Changeover
Quickly adapt the retract distance for different product lengths on a packaging line using the 40mm adjustment range, eliminating the need to swap cylinders or reposition external stops.
End-Position Tuning
Fine-tune the exact retraction point during machine commissioning to account for mechanical tolerances, ensuring precise placement without physical shimming.
Variable Forming Stops
Set precise material forming depths in light assembly equipment, relying on the 2513N push force to consistently shape components at the adjusted end-point.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X115-40 the Right Cylinder?
Choose this 80mm bore when an application requires around 2513N of push force at 0.5 MPa (or 3518N at 0.7 MPa), and stepping down to a 63mm bore would only provide 1559N. The 40mm adjustment window is highly beneficial for product size changeovers on a line, letting technicians modify the retract distance on the fly. Unlike a fixed-stroke SAI cylinder, this adjustable model accommodates varying material thicknesses without machining new mounting plates.
When ordering, specify the 80mm bore, 115mm stroke, 40mm adjustment, PT tapered port thread, and desired mounting bracket. Because the stroke is under 300mm, side-load stress on the 25mm rod is manageable without an external guide, though long unsupported loads still require one. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider the SAIL or BSAI series instead.
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 SAIJ80X115-40 FAQ
At 0.5 MPa, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. If operating pressure is increased to 0.7 MPa, the push force reaches 3518N.
The rear adjuster acts as a mechanical stopper that trims the effective stroke back from the nominal 115mm down to as little as 75mm. This creates a 75-115mm adjustable travel window, allowing you to set the exact end-position during commissioning without replacing the cylinder.
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