Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-100
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-100 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 SAIJ80AX425-100
The AirTAC SAIJ80X425-100 is a double-acting ISO 15552 profile cylinder featuring a rear mechanical stopper that allows you to fine-tune the travel end position. With a nominal stroke of 425 mm and a 100 mm adjustment range, you can dial the effective travel back to anywhere within a 325-425 mm window. This bore delivers substantial thrust, offering 3518 N of push force at 0.7 MPa, making it well-suited for heavy actuation tasks.
This specific configuration includes a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel integrates sensor grooves on both sides for flexible switch mounting. Because the 425 mm stroke is relatively long, an external guide is recommended to manage side loads and prevent rod deflection during operation.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-100 |
|---|---|
| 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 SAIJ80AX425-100
| 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 SAIJ80AX425-100 Is Used
Variable End-Stop Machining
Fine-tune the clamping travel window between 325 and 425 mm on the fly to accommodate different part lengths without changing out the cylinder body.
Product Changeover Diverter
Adjust the stroke end-position during product size changes on a packaging line, ensuring precise diverting forces without external mechanical stops.
Heavy Assembly Press
Leverage the 4523 N push force at 0.9 MPa to seat heavy components, dialing back the stroke exactly to the assembly depth required.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX425-100 the Right Cylinder?
Choose this 80 mm bore adjustable cylinder when your machine setup requires variable end-stops or precise end-position tuning during commissioning without swapping out the physical cylinder. If you need less force, stepping down to a 63 mm bore yields 2182 N of push at 0.5 MPa; if your application demands more power, a 100 mm bore provides 5497 N at 0.7 MPa. For a fixed travel length without the need for commissioning adjustments, the standard SAI series is a simpler alternative.
When matching ISO 15552 replacements, verify the 80 mm bore, 425 mm stroke, 100 mm adjustment range, PT port thread, and the desired mounting accessory from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that this model does not include a magnet (-S) for proximity sensing. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure; for fail-safe load holding, 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 SAIJ80AX425-100 FAQ
The rear of the cylinder features an external adjusting screw that acts as a mechanical stop. It allows you to shorten the effective stroke by up to 100 mm, providing a usable travel window of 325 to 425 mm for precise end-position tuning at commissioning.
At an operating pressure of 0.7 MPa, the SAIJ80X425-100 provides a push force of 3518 N and a pull force of 2268 N. At 0.9 MPa, the push force increases to 4523 N.
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