Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-20
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX125-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 125mm 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
- Stroke125 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 SAIJ80BX125-20
The AirTAC SAIJ80X125-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. By turning the rear stopper screw, you can fine-tune the effective travel window down from the 125mm nominal stroke to a minimum of 105mm, giving you a 20mm adjustment range to dial in exact end positions without adding external stops.
This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments. The rear adjuster functions purely as a mechanical travel stop to set deceleration points, not as a load-holding lock.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 125 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 SAIJ80BX125-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SAIJ80BX125-20 Is Used
Machine Changeover
Quickly reposition the retract end-stop within the 105-125mm window when switching a packaging line to a different carton size.
End-Position Tuning
Dial in the exact 2513N clamping depth during installation without swapping out the entire ISO 15552 cylinder body.
Corrosive Assembly Lines
Leverage the SUS304 stainless steel rod to push parts in humid or washdown manufacturing environments without rusting.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-20 the Right Cylinder?
If you need less force, stepping down to a 63mm bore yields 1559N; if your load demands more, a 100mm bore provides 3927N. Choose this adjustable-stroke SAIJ model over a fixed SAI when you need to accommodate product size changes or fine-tune the retract end-position during machine commissioning. To match this exact configuration, specify an 80mm bore, 125mm stroke, 20mm adjustment, PT port threads, and the SUS304 (code B) rod material.
Because the nominal stroke is 125mm, side-load risks are moderate, but always guide long unsupported loads. Remember that the SAIJ rear adjuster only trims the travel end and does not hold the load without live air pressure. For true fail-safe load holding, select an AirTAC SAIL or BSAI 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 SAIJ80BX125-20 FAQ
The SAIJ80X125-20 features a rear stopper screw that mechanically limits the retract stroke. You can adjust the usable travel anywhere between 105mm and 125mm to fine-tune the end position during setup.
At the maximum 1.0 MPa pressure, it achieves a maximum push force of 513 kgf.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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