Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-40S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 425mm 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
- Stroke425 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-40S
The AirTAC SAIJ32X425-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 425 mm stroke that can be fine-tuned backward by up to 40 mm, yielding a usable travel window of 385 to 425 mm. This allows precise end-position calibration during commissioning without swapping hardware. 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 features a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing. The extruded aluminum barrel incorporates sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic solid-state switches. Because the 425 mm stroke is relatively long for a 32 mm bore, an external guide is recommended to prevent excessive side loading on the 12 mm rod.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-40S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 425 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 SAIJ32BX425-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×425 | 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 SAIJ32BX425-40S Is Used
Product Changeovers
Dial in the 385-425 mm travel window quickly during format size changes on packaging lines without replacing the cylinder.
End-Stop Calibration
Fine-tune the retract position during machine commissioning to achieve exact placement without adding external mechanical stops.
Diversion Gates
Adjust the actuation length on the fly for sorting different package sizes on a conveyor system.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-40S the Right Cylinder?
Choose this adjustable SAIJ model when a fixed-stroke SAI cylinder cannot accommodate product changeovers or exact end-stop tuning on the fly. The rear adjuster acts purely as a travel stop and does not lock the load without live air; for fail-safe load holding, consider an SAIL or BSAI cylinder instead. If your application requires less force, step down is not an option in this bore size, but stepping up to a 40 mm bore provides 628 N push force at 0.5 MPa.
To match this exact ISO 15552 interchangeable replacement, specify a 32 mm bore, 425 mm stroke, 40 mm adjustment range, PT tapered port threads, and the -S magnet option. The standard mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. Given the extended stroke, ensure your mounting configuration supports the rod adequately to minimize deflection.
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 SAIJ32BX425-40S FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. At 0.7 MPa, the push force increases to 563 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 40 mm from the 425 mm nominal length, giving an adjustable travel window of 385 to 425 mm. It functions as a stop and does not hold the load without air pressure.
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