Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-75S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-75S 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 SAIJ32BX425-75S
The AirTAC SAIJ32X425-75-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 350 to 425 mm, allowing you to dial back the extension by up to 75 mm during commissioning without adding external stops. In the 32 mm bore class, it delivers 402 N of push force at 0.5 MPa and 563 N at 0.7 MPa.
This variant uses a SUS304 stainless steel rod for corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. It carries a PT tapered port thread and relies on a 12 mm rod with an M10x1.25 thread. Because the stroke is 425 mm, an external guide is recommended to manage side-load on the unsupported rod.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-75S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-75S |
|---|---|
| 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 SAIJ32BX425-75S
| 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 SAIJ32BX425-75S Is Used
Machine Commissioning
Fine-tune the 350-425 mm travel window during setup to dial in the exact extension needed without machining new hard stops.
Product Changeover
Quickly adjust the rear stopper up to 75 mm to accommodate different package sizes on a packaging line.
Variable End Stops
Use the rear screw to set precise retract positions for multiple operations within the same cycle.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-75S the Right Cylinder?
Choose this 32 mm bore when your application requires 402 N of push force at 0.5 MPa and a highly flexible end-position. If you need more thrust, stepping up to the 40 mm bore yields 628 N at the same pressure. The 75 mm adjustment range is ideal for product changeovers on a line, letting you set variable end-stops on the fly instead of swapping out a fixed-stroke SAI cylinder.
Remember that the rear adjuster acts only as a travel stop, not a lock; the SAIJ32X425-75-S cannot hold a load without live air pressure. For fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder. As a dimensionally interchangeable ISO 15552 cylinder, it mounts via Basic, FA, LB, TC, FTC, TCM1, or TCM2 interfaces.
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 SAIJ32BX425-75S FAQ
At 0.5 MPa it 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 lets you shorten the nominal 425 mm stroke by up to 75 mm, creating a usable travel window of 350 to 425 mm. It acts as a mechanical stop and does not lock the load without continuous air pressure.
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