Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-20S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX125-20S 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 SAIJ80BX125-20S
The AirTAC SAIJ80X125-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 105 to 125 mm for precise end-position tuning. The integrated -S magnet enables position detection with AirTAC CMSE reed and DMSE electronic sensors.
This variant features a SUS304 stainless steel rod (code B) for superior corrosion resistance, paired with PT tapered port threads and a G3/8 air connection. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. It is important to note that the rear adjuster acts strictly as a travel stop and does not hold the load without continuous live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-20S |
|---|---|
| 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 SAIJ80BX125-20S
| 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 SAIJ80BX125-20S Is Used
Variable End-Stop Positioning
Dial in the exact retraction point within the 105-125 mm window during commissioning to accommodate different material thicknesses without adding external mechanical stops.
Corrosion-Resistant Actuation
Deploy the SUS304 stainless steel rod in humid or washdown manufacturing environments where standard carbon steel rods would degrade over time.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX125-20S the Right Cylinder?
The adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers without swapping hardware, unlike a fixed-stroke SAI cylinder. If your setup demands genuine load-holding during air loss, consider a SAIL or BSAI variant instead, as the SAIJ adjuster is not a locking mechanism.
For this 125 mm stroke configuration, the 25 mm rod diameter and M20x1.5 rod thread provide excellent structural rigidity and side-load tolerance. Because the mounting hardware utilizes the reduced SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR options, ensure your ISO 15552 interchangeable fixture matches this subset. Operating speed ranges from 30 to 800 mm/s, regulated by variable air cushions at both ends.
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 SAIJ80BX125-20S FAQ
At the maximum 1.0 MPa pressure, it achieves a peak push force of 513 kgf.
The rear adjuster screw allows you to shorten the nominal 125 mm stroke by up to 20 mm, creating a usable travel window of 105 to 125 mm. This mechanism acts only as a travel stop for end-position tuning and does not lock the load without live air pressure.
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Covers non-human-caused product damage.
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