Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-50
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-50 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 SAIJ32AX425-50
The AirTAC SAIJ32X425-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 375-425 mm, allowing you to dial back the 425 mm nominal stroke by up to 50 mm during commissioning without adding external stops. In the 32 mm bore class, it delivers 563 N of push force at 0.7 MPa.
This unit is built with a SUS420J2 stainless steel rod for improved corrosion resistance and uses a PT tapered port. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU is configured without a magnet. The rear adjuster acts purely as a mechanical stop to set the end position and does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-50 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-50 |
|---|---|
| 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 SAIJ32AX425-50
| 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 SAIJ32AX425-50 Is Used
Machine Changeover
Dial in the exact end-stop from 375 to 425 mm during product size changes on a packaging line, avoiding physical cylinder swaps.
Commissioning Tuning
Fine-tune the retract position at machine setup to synchronize tooling pick-up points without machining external spacers.
Variable End Stops
Adjust the travel limit on the fly for diverter gates that need to accommodate varying package lengths on a conveyor.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-50 the Right Cylinder?
Choose this 32 mm bore adjustable-stroke cylinder when your application requires fine end-position tuning on the fly, rather than relying on a fixed-stroke SAI model. If your process demands higher output, stepping up to the 40 mm bore yields 879 N of push force at 0.7 MPa. Because the 425 mm stroke is relatively long for this compact bore, an external guide is recommended to manage side loads and prevent rod deflection.
To match this ISO 15552 interchangeable cylinder for a replacement, verify the 32 mm bore, 425 mm stroke, 50 mm adjustment range, PT port thread, and the absence of a magnet. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts. For load-holding requirements without live air, 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 SAIJ32AX425-50 FAQ
At 0.7 MPa operating pressure, the 32 mm bore provides a push force of 563 N and a pull force of 402 N. It can deliver a maximum push force of 724 N at 0.9 MPa.
The rear adjuster screw lets you mechanically shorten the effective stroke from 425 mm down to 375 mm. This stopper sets the travel end during setup but does not lock or hold the load without continuous air pressure.
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