Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 125mm stroke, G1/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ32 mm
- Stroke125 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-40
The AirTAC SAIJ32X125-40 is a double-acting ISO 15552 profile cylinder featuring a rear mechanical stroke adjuster. It provides a 125 mm nominal stroke that can be dialed back by up to 40 mm, yielding an 85-125 mm usable travel window for precise end-position tuning during commissioning. In the 32 mm bore class, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa.
This variant uses a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads with a G1/8 connection. The extruded aluminum barrel includes sensor grooves on both sides, and the adjustable rear stopper acts purely as a travel end-stop, meaning it will not hold a load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max stroke | Up to 1000 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | 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 Adjustable Cylinder SAIJ32 SAIJ32BX125-40 Is Used
Machine Changeover
Dial in the 85-125 mm travel window on the fly to accommodate slight product size variations during line changeovers without changing the cylinder.
End-Position Tuning
Fine-tune the retract end-stop during initial commissioning to achieve exact sensor triggering and precise mechanical positioning.
Adjustable Stops
Replace fixed external stopper blocks with the integrated 40 mm rear adjuster for a cleaner, more compact machine layout.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-40 the Right Cylinder?
Choose this 32 mm bore adjustable cylinder when an application requires exact end-stop tuning without adding external stops or swapping components. If your process demands higher force, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa. Conversely, if your force needs are lower, a smaller bore might be more efficient. For load-holding without continuous air pressure, consider the SAIL or BSAI series instead, as the SAIJ adjuster is a stop, not a lock.
This model is dimensionally interchangeable per ISO 15552 and serves as a direct drop-in replacement for standard ISO 15552 cylinders. To match this exact configuration, specify a 32 mm bore, 125 mm stroke, 40 mm adjustment range, PT port threads, SUS304 stainless steel rod, and no magnet. Since the nominal stroke is 125 mm, side-load risks are moderate, but an external guide is recommended for heavy lateral loads.
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 Adjustable Cylinder SAIJ32 SAIJ32BX125-40 FAQ
It features a rear adjusting screw that allows you to shorten the effective stroke by up to 40 mm. This creates an 85-125 mm usable travel window, letting you fine-tune the retract end position at commissioning without replacing the cylinder.
At a standard operating pressure of 0.5 MPa, the 32 mm bore generates 402 N of push force and 345 N of pull force. It can reach up to 724 N of push force at 0.9 MPa.
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