Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-100S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-100S 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 SAIJ80AX425-100S
The AirTAC SAIJ80X425-100-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 325-425 mm usable travel window, allowing you to dial back the 425 mm nominal stroke by up to 100 mm during commissioning. Delivering 2513 N of pull force at 0.5 MPa, it fits medium-to-heavy duty applications perfectly.
This specific SKU features a SUS420J2 stainless steel rod for enhanced corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides, and the PT tapered ports ensure reliable pneumatic sealing.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-100S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-100S |
|---|---|
| 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 SAIJ80AX425-100S
| 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 SAIJ80AX425-100S Is Used
Product Changeovers
Dial in the 325-425 mm travel window on the fly to accommodate different package sizes on a packaging line without changing out the cylinder.
End-Stop Tuning
Fine-tune the retract end position during machine commissioning using the rear screw, avoiding the need for external mechanical stops.
Long-Stroke Forming
Leverage the 2513 N pull force and 425 mm travel for press operations requiring precise bottoming-out distance calibration.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-100S the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI when your machine setup requires variable end-stops or product-size changeovers without physically swapping the cylinder. If you need slightly less push force, the 63 mm bore provides 1559 N at 0.5 MPa; stepping up to the 100 mm bore yields 3927 N. To replace this ISO 15552 cylinder, match the 80 mm bore, 425 mm stroke, 100 mm adjustment, PT G3/8 ports, and the -S magnet.
Because the 425 mm stroke is long, the 25 mm rod and M20x1.5 thread handle side loads well but still require an external guide to prevent binding. Note that the rear adjuster is a travel stop, not a lock; this SAIJ cylinder will not hold a load without live air. For fail-safe load holding, use an external rod lock or consider the SAIL or BSAI series.
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 SAIJ80AX425-100S FAQ
At 0.5 MPa, this 80 mm bore cylinder provides 2513 N of pull force and 3518 N of push force. At the maximum operating pressure of 1.0 MPa, it delivers up to 513 kgf.
The rear adjuster acts as a mechanical stop that lets you shorten the 425 mm nominal stroke by up to 100 mm, creating a 325-425 mm usable travel window. It only sets the travel end and does not lock the load without live air pressure.
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