Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-75
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-75 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 SAIJ32AX425-75
The AirTAC SAIJ32X425-75 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 75 mm. This creates a highly flexible 350-425 mm usable stroke window, letting you dial in the exact end position at commissioning without adding external stops. It delivers 402 N of push force and 345 N of pull force at 0.5 MPa, utilizing a 12 mm rod with an M10x1.25 thread.
This specific configuration uses a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides, and while this unit ships without a magnet, adding one enables compatibility with CMSE reed and DMSE electronic sensors for position feedback.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-75 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-75 |
|---|---|
| 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 SAIJ32AX425-75
| 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 SAIJ32AX425-75 Is Used
Machine Setup Changeover
Fine-tune the 350-425 mm travel window during product line changeovers, setting exact retract positions without physically replacing the cylinder.
Variable End-Stop Positioning
Adjust the rear stopper on the fly to accommodate different package sizes or part lengths moving down a handling line.
Long-Stroke Assembly Press
Leverage the 425 mm travel for deep-reaching assembly tasks, dialing back the last 75 mm to perfectly seat components without bottoming out.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-75 the Right Cylinder?
Choose this 32 mm bore when your application requires the 402 N thrust class at 0.5 MPa, but stepping down is unnecessary unless you need the 345 N pull force of a smaller 25 mm unit. The 75 mm adjustment range is perfect for product-size changeovers on a line, allowing variable end-stops without swapping the entire cylinder for a fixed-stroke SAI model. Because the stroke is 425 mm, the 12 mm piston rod will experience greater leverage forces; an external guide is recommended to prevent side-load damage.
For ISO 15552 interchangeability, match the 32 mm bore, 425 mm stroke, PT tapered port threads, and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that the rear adjuster acts only as a travel stop to work alongside the 27 mm air cushions; it does not hold the load without live air. For true load-holding, consider the SAIL or BSAI series.
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 SAIJ32AX425-75 FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. It can reach up to 724 N of push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from its 425 mm nominal length down to 350 mm. It decelerates the travel end alongside the air cushion but does not lock the load without live air pressure.
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