Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-40S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-40S 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 SAIJ32AX425-40S
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, creating a precise 385-425 mm usable travel window for product changeovers. Delivering 402 N of push force at 0.5 MPa, it is built with an SUS420J2 stainless steel rod and includes a magnet for position sensing.
This model features PT tapered port threads (G1/8) and operates at speeds between 30 and 800 mm/s. The extruded aluminum barrel includes sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic switches. The rear adjuster acts purely as a mechanical stop to set the end position and does not lock the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-40S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-40S |
|---|---|
| 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 SAIJ32AX425-40S
| 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 SAIJ32AX425-40S Is Used
Machine Changeover
Dial in the 385-425 mm travel window during product size changes without replacing the cylinder or adding external mechanical stops.
End-Position Tuning
Fine-tune the retract end position at commissioning to perfect the 425 mm stroke timing and avoid hard impacts.
Variable Stops
Adjust the rear stopper screw to alter the pusher distance on the fly for varying package lengths on a packaging line.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-40S the Right Cylinder?
Choose this 32 mm bore when an application requires 402 N push force at 0.5 MPa with on-the-fly end-position tuning, avoiding the need to swap cylinders or bolt on external stops. If your setup demands higher thrust, stepping up to the 40 mm bore yields 628 N at 0.5 MPa. Because the 425 mm stroke is relatively long for this bore size, an external guide is recommended to prevent excessive side-loading on the rod.
To match this exact configuration for an ISO 15552 replacement, specify the 32 mm bore, 425 mm stroke, 40 mm adjustment range, PT port thread, and the -S magnet option. Mounting choices are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. For applications requiring true load-holding without continuous air pressure, consider the SAIL or BSAI series instead of relying on the adjuster.
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 SAIJ32AX425-40S FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. The maximum thrust is 82 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the effective stroke by up to 40 mm, providing a usable travel window of 385 to 425 mm. It functions as a mechanical stop and does not lock the load without live air pressure.
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