Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-50
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX140-50 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 SAIJ80AX140-50
The AirTAC SAIJ80X140-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 90 to 140 mm, allowing you to dial back the nominal 140 mm stroke by up to 50 mm during machine setup.
This model features a SUS420J2 stainless steel rod for improved corrosion resistance and uses tapered PT port threads. The extruded aluminum barrel includes sensor grooves on both sides, and while this specific SKU lacks a magnet, the grooves are ready to host CMSE reed or DMSE electronic sensors if you switch to an -S variant later.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-50 |
|---|---|
| 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 SAIJ80AX140-50
| 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 SAIJ80AX140-50 Is Used
Product Changeover
Dial the stroke back from 140 mm to 90 mm instantly on the production line to accommodate varying package sizes without changing the cylinder.
End-Position Tuning
Fine-tune the retract end position during commissioning to achieve exact contact timing without fabricating external mechanical stops.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX140-50 the Right Cylinder?
If your load demands less force, stepping down to a 63 mm bore yields 2182 N at the same pressure, whereas stepping up to a 100 mm bore provides 5497 N. The integrated rear stopper enables fine-tuning of the end position without swapping cylinders or adding external stops.
Because the nominal stroke is 140 mm, an external guide is recommended to manage side loads. Remember that the rear adjuster acts only as a travel stop, not a load-holding lock; for position holding without live air pressure, consider an AirTAC SAIL or BSAI cylinder. For a direct ISO 15552 replacement, match the 80 mm bore, 140 mm stroke, 50 mm adjustment, PT G3/8 ports, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting.
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 SAIJ80AX140-50 FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 50 mm. This creates a usable travel window of 90 to 140 mm, letting you set the exact retract end position without replacing the cylinder.
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