Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-40 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 SAIJ32AX425-40
The AirTAC SAIJ32X425-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 385 to 425 mm usable travel window, allowing you to dial back the nominal 425 mm stroke by up to 40 mm during machine commissioning without adding external stops. It delivers 402 N of push force and 345 N of pull force at 0.5 MPa operating pressure.
This variant features a SUS420J2 stainless steel rod for superior corrosion resistance and utilizes PT tapered port threads (G1/8). The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. The rear adjuster acts purely as a travel stop for end-position tuning, not as a load-holding lock.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-40 |
|---|---|
| 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 SAIJ32AX425-40
| 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 SAIJ32AX425-40 Is Used
Machine Changeover Tuning
Dial in the exact 385 to 425 mm end-position during product family changeovers without swapping the physical cylinder or adding external stopper blocks.
Variable End-Stop Diverting
Adjust the retract stroke on the fly to accommodate different package sizes on a packaging line, using the 40 mm trim range to alter the stop position.
Commissioning Setup
Fine-tune the final end-position during initial machine build to account for mechanical tolerance stack-up, locking the rear screw once the exact travel is set.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-40 the Right Cylinder?
Choose this 32 mm bore actuator when your application requires 402 N of push force at 0.5 MPa and on-the-fly end-position tuning. If your setup needs less force, stepping down is not an option from this bore, but stepping up to a 40 mm bore yields 628 N of push force at 0.5 MPa. The 40 mm adjustment range is ideal for product changeovers where the exact end-of-stroke varies by fixture. Because the 425 mm stroke is relatively long, an external guide is recommended to prevent excessive side-loading on the 12 mm rod.
This SAIJ model supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. It is dimensionally interchangeable per ISO 15552 standards. Remember that the rear screw and air cushions only decelerate the travel end; for true load-holding without live air pressure, select a SAIL or BSAI cylinder instead.
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 SAIJ32AX425-40 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 the maximum 1.0 MPa pressure, it delivers up to 82 kgf.
The rear adjusting screw acts as a mechanical stop that lets you shorten the effective stroke by up to 40 mm, creating a 385 to 425 mm usable travel window. It is a travel stop only and does not lock or hold the load without continuous air pressure.
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