Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-30 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 SAIJ80AX425-30
The AirTAC SAIJ80X425-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down to a 395-425 mm window. Delivering 2513 N of push force at 0.5 MPa, it is built with a SUS420J2 stainless steel rod for improved corrosion resistance and uses a tapered PT G3/8 port.
This adjustable-stroke design allows precise end-position calibration during commissioning without adding external stops or swapping the cylinder. It features variable air cushions at both ends to manage deceleration, but note that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-30 |
|---|---|
| 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 SAIJ80AX425-30
| 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 SAIJ80AX425-30 Is Used
Machine Changeovers
Dial in the 395-425 mm travel window during product size transitions without physically replacing the cylinder or adding external stopper blocks.
End-Position Tuning
Fine-tune the retract stroke end to compensate for mechanical wear or sensor drift during the initial commissioning phase.
Variable Stops
Adjust the stroke dynamically on packaging lines to handle different carton sizes using the 30 mm rear adjustment screw.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-30 the Right Cylinder?
Choose this 80 mm bore if you need more force than the 63 mm class (1402 N pull at 0.5 MPa) but less bulk than the 100 mm option. An adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers, providing flexibility that a fixed-stroke SAI cannot match.
For load-holding without continuous air pressure, this cylinder is insufficient; consider the SAIL pneumatic lock or BSAI clamp-lock series instead. Because the stroke is 425 mm, the 25 mm rod should be adequately guided externally to prevent excessive side-loading. This model is dimensionally interchangeable with ISO 15552 cylinders and supports mounting options including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80AX425-30 FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster screw allows you to shorten the nominal 425 mm stroke by up to 30 mm, creating a usable travel window of 395 to 425 mm. The adjuster acts as a mechanical stop and does not lock the load in place without air pressure.
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