Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-75
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX140-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 140mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke140 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-75
The AirTAC SAIJ80X140-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits precise end-position tuning. It yields a usable travel window of 65 to 140 mm, allowing you to dial back the nominal stroke by up to 75 mm during machine setup or product changeover without adding external stops. The 80 mm bore generates 2513 N of pull force at 0.5 MPa and up to 4523 N at 0.9 MPa, making it well-suited for heavy handling tasks.
This unit features a SUS420J2 stainless steel rod for enhanced corrosion resistance and utilizes a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. Remember that the rear adjuster acts only as a travel stop to set deceleration; it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-75 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 140 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×140 | 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 SAIJ80AX140-75 Is Used
Variable End-Stop Machining
Dial in the exact clamping depth on machining fixtures by adjusting the retract stroke from 65 to 140 mm to accommodate different raw material thicknesses without swapping cylinders.
Product Changeover Diverter
Rapidly reposition a conveyor divert gate during product line changeovers by trimming the stroke back up to 75 mm, ensuring packages of varying dimensions are routed correctly.
Heavy Assembly Press
Leverage the 2513 N pull force at 0.5 MPa to seat heavy components, using the rear stopper to fine-tune the final pressing depth for precise assembly tolerances.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-75 the Right Cylinder?
Select this 80 mm bore model when your application requires substantial force, such as the 2513 N pull at 0.5 MPa, alongside a highly variable end-stop. If you need less force, the 63 mm bore offers 1402 N pull at 0.5 MPa, while the 100 mm bore provides 3681 N pull for heavier loads. Choose the SAIJ adjustable-stroke variant over a fixed SAI cylinder when you need to fine-tune the retract position at commissioning or accommodate varying product sizes on the same line.
For an exact ISO 15552 replacement match, configure with an 80 mm bore, 140 mm stroke, 75 mm adjustment, PT port thread, and SUS420J2 (A) rod material. Note that this SKU does not include a magnet (-S), so position sensing is not available without a different configuration. If your process requires the cylinder to hold its position without live air, this adjuster will not suffice; consider an AirTAC SAIL (air-released 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 SAIJ80AX140-75 FAQ
At 0.9 MPa, the push force increases to 4523 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from its 140 mm nominal length down to 65 mm. This provides a 75 mm tuning window for setting exact end positions during commissioning.
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