Airtac SAIJ80 Adjustable Cylinder SAIJ80AX45-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX45-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 45mm 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
- Stroke45 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX45-40S
The AirTAC SAIJ80X45-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 45 mm travel by up to 40 mm. This creates a highly versatile 5-45 mm usable stroke window, perfect for dialing in exact end positions during machine commissioning without swapping hardware. It delivers robust performance, generating 2513 N of push force and 2268 N of pull force at 0.5 MPa.
This SKU features a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel houses sensor grooves on both sides, and the PT G3/8 ports deliver air efficiently. The rear adjuster acts purely as a mechanical stop to set the travel end, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX45-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX45-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 45 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 SAIJ80AX45-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×45 | 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 SAIJ80AX45-40S Is Used
Machine Changeover
Quickly adapt to new product sizes by dialing the stroke back from 45 mm down to 5 mm, achieving precise end-stops during setup without mechanical rework.
Clamp Positioning
Leverage the 2513 N push force at 0.5 MPa to secure heavy workpieces, using the rear adjuster to set the exact clamping depth for delicate materials.
Assembly Stations
Utilize the integrated magnet with DMSE solid-state sensors to confirm retraction, while fine-tuning the tooling approach distance safely within the 5-45 mm window.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX45-40S the Right Cylinder?
Choose this 80 mm bore when an application requires substantial force that a 50 mm bore cannot provide, yet steps down logically from the 3927 N push force of a 100 mm cylinder. The adjustable 5-45 mm travel window is ideal for product-size changeovers on a line, letting operators fine-tune the retract end-position on the fly instead of adding external stops or reverting to a fixed-stroke SAI cylinder. For exact ISO 15552 replacement matching, verify the 45 mm stroke, 40 mm adjustment range, PT G3/8 port thread, and the -S magnet requirement. If the machine cycle demands true load-holding without live air, a plain SAIJ is insufficient; consider an AirTAC SAIL (pneumatic lock) or BSAI (clamp-lock) cylinder 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 SAIJ80AX45-40S FAQ
At a 0.5 MPa operating pressure, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, it achieves a maximum push force of 4523 N.
The rear adjusting screw acts as a mechanical stop that trims the effective travel. For the SAIJ80X45-40-S, this creates a usable stroke window from 5 mm to 45 mm, allowing precise end-position tuning at commissioning without replacing the cylinder.
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