Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-20 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 SAIJ32BX125-20
The AirTAC SAIJ32X125-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 20 mm, creating a usable 105-125 mm window for precise end-position tuning at commissioning. It delivers 402 N of push force at 0.5 MPa and utilizes a SUS304 stainless steel piston rod for superior corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches.
This model features a PT tapered G1/8 port and achieves a standard speed range of 30-800 mm/s. The rear adjuster acts purely as a mechanical stop to set the retract position and does not lock the load without live air pressure. It supports a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options available on fixed-stroke variants.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-20 |
|---|---|
| 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 SAIJ32BX125-20
| 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 SAIJ32BX125-20 Is Used
Machine Changeover
Dial in the 105-125 mm retract position during product size changes without swapping out the cylinder or re-engineering the fixture.
End-Stop Calibration
Fine-tune the final retract position during commissioning to perfect a pressing or clamping operation within a 20 mm window.
Sorting Diverter
Adjust the travel limit on a pneumatic diverter gate to handle varying package sizes on a single conveyor line.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-20 the Right Cylinder?
Choose this 32 mm bore when your application requires 402 N of push force at 0.5 MPa and on-the-fly end-position adjustments without swapping cylinders or adding external stops. If your setup needs higher thrust, stepping up to the 40 mm bore yields 628 N, while the adjustable 105-125 mm travel window here is perfect for accommodating minor product size changes on a single machine. Remember that the rear adjuster only decelerates the travel end; for true load-holding without live air, consider the SAIL or BSAI series.
When replacing an ISO 15552 cylinder, match the 32 mm bore, 125 mm stroke, 20 mm adjustment, PT G1/8 port, and your required mounting style. Because the stroke is under 300 mm, side-load stress on the 12 mm rod is minimal, though long unsupported loads should still use an external guide.
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 SAIJ32BX125-20 FAQ
A rear adjusting screw acts as a mechanical stopper, allowing you to shorten the 125 mm nominal stroke by up to 20 mm. This creates a usable travel window of 105-125 mm, which can be fine-tuned during commissioning without adding external stops.
At a 0.5 MPa operating pressure, the SAIJ32X125-20 provides 402 N of push force and 345 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 82 kgf.
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