Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-50S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-50S 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 SAIJ32AX425-50S
The AirTAC SAIJ32X425-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 375 to 425 mm without swapping the unit. It delivers 402 N of push force at 0.5 MPa, supported by a 12 mm carbon steel core and a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides, and because this SKU includes a magnet (-S), it directly supports AirTAC CMSE reed and DMSE electronic solid-state switches.
This model uses PT tapered G1/8 ports and reaches speeds of 30-800 mm/s. The rear adjustment screw acts purely as a mechanical stop to set the end position; it does not lock or hold the load without continuous air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-50S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-50S |
|---|---|
| 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 SAIJ32AX425-50S
| 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 SAIJ32AX425-50S Is Used
Variable End-Stop Tuning
Dial in the precise 375 to 425 mm retract position during machine commissioning without adding external mechanical stops.
Product Size Changeover
Quickly adapt the stroke length on packaging lines handling varying product sizes by adjusting the rear screw.
Sensor-Ready Positioning
Leverage the built-in magnet with DMSE electronic sensors to confirm the adjusted end-position across the travel window.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-50S the Right Cylinder?
Choose this 32 mm bore when your application requires 402 N of push force at 0.5 MPa, or step up to the 40 mm bore if you need 628 N. The 50 mm adjustment range is ideal for product changeovers, allowing you to dial in the exact end-stop on the fly rather than machining external stops or buying a fixed-stroke SAI cylinder. Because the 425 mm stroke is relatively long for a 12 mm rod, an external guide is recommended to prevent excessive side-loading and premature seal wear.
This cylinder is dimensionally interchangeable per ISO 15552 with a PT port thread, SUS420J2 rod material, and a -S magnet. The available mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ32AX425-50S FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the effective travel by up to 50 mm, providing a usable stroke window of 375 to 425 mm. It only sets the end position and does not lock the load without live air pressure.
At 0.5 MPa operating pressure, it provides 402 N of push force and 345 N of pull force. At the maximum pressure of 1.0 MPa, the push force reaches 801 N.
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