Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 425mm 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
- Stroke425 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-40S
The AirTAC SAIJ80X425-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 2513N of push force at 0.5 MPa and features a 425mm nominal stroke that can be fine-tuned down by up to 40mm, creating a precise 385-425mm usable travel window. This built-in adjustability allows you to dial in the exact retract end-position during commissioning without swapping out the entire unit.
This specific SKU is configured with an SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. It uses a G3/8 port and achieves speeds of 30-800mm/s. Because the stroke extends to 425mm, an external guide is recommended to prevent excessive side-loading on the piston rod.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 425 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 SAIJ80AX425-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×425 | 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 SAIJ80AX425-40S Is Used
Product Changeovers
Dial in the 385-425mm travel window during format changeovers to accommodate different product lengths without physically replacing the cylinder.
Machine Setup Tuning
Fine-tune the retract end-position at commissioning using the rear stopper, ensuring precise alignment without adding bulky external stops.
Variable End Stops
Ideal for automated lines requiring flexible end-of-stroke positioning, leveraging the 2513N push force to handle substantial loads reliably.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-40S the Right Cylinder?
Select this 80mm bore cylinder when an application requires substantial pull force (2268N at 0.5 MPa) alongside variable end-stop positioning. If your setup demands less force, stepping down to a 63mm bore provides 1402N of pull force, whereas moving up to a 100mm bore yields 3681N. The adjustable stroke is ideal for product-size changeovers on a line, functioning as a travel stop rather than a load lock. For applications requiring true load-holding without live air pressure, consider an AirTAC SAIL or BSAI cylinder instead.
When replacing an ISO 15552 cylinder, match the 80mm bore, 425mm stroke, 40mm adjustment range, PT port threads, and -S magnet. The SAIJ series supports a specific mounting subset including Basic, FA, LB, TC, FTC, TCM1, and TCM2, intentionally omitting FB, CA, CB, and CR brackets. Given the 425mm stroke, ensure your mounting configuration properly supports the rod to mitigate deflection.
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 SAIJ80AX425-40S 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 allows you to shorten the 425mm nominal stroke by up to 40mm, providing an effective travel window of 385-425mm. It only sets the end position and does not lock the load without live air.
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