Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-100
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-100 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 SAIJ32BX425-100
The AirTAC SAIJ32X425-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 325 to 425 mm usable travel window. Part of the adjustable-stroke SAIJ series, it allows precise end-position tuning at commissioning without swapping the cylinder or adding external stops. It delivers 402N of push force and 345N of pull force at 0.5 MPa, utilizing a PT tapered G1/8 port.
This 32mm bore unit features an SUS304 stainless steel rod for superior corrosion resistance and carries a 27mm cushion length to decelerate the load. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed and DMSE electronic solid-state switches. The rear adjuster acts purely as a mechanical stop and does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-100 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-100 |
|---|---|
| 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 SAIJ32BX425-100
| 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 SAIJ32BX425-100 Is Used
Variable End-Stop Positioning
Dial in the exact retract position within the 325-425mm window during machine commissioning to accommodate varying material thicknesses without machining new hard stops.
Product Size Changeover
Quickly adjust the effective stroke on automated lines processing different product lengths, utilizing the 100mm adjustment range to handle diverse part sizes on the same tooling.
Corrosive Environment Testing
Leverage the SUS304 stainless steel rod material in light chemical or washdown testing environments where standard carbon steel rods would risk degradation over time.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-100 the Right Cylinder?
Choose this 32mm bore model when an application requires a 425mm nominal stroke but needs on-the-fly end-position adjustments up to 100mm for product changeovers. If your setup requires higher force, stepping up to the 40mm bore yields 628N of push force at 0.5 MPa. Because the stroke is 425mm, long unsupported travel necessitates an external guide to prevent excessive rod side-loading.
An adjustable stroke is preferred over a fixed SAI cylinder when you need variable end-stops or fine-tuning during machine setup. Remember that the rear adjuster and air cushions only set the travel end and decelerate the load; neither holds the load without live air. For true fail-safe load holding without pressure, consider the SAIL (air-released lock) or BSAI (clamp-lock) cylinders. This SAIJ model uses PT ports and the reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ32BX425-100 FAQ
At 0.5 MPa operating pressure, this 32mm bore cylinder provides 402N of push force and 345N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 82 kgf.
The rear adjuster screw acts as a mechanical stop that lets you trim the effective travel back by up to 100mm from the 425mm nominal stroke, creating a 325-425mm usable window. It only sets the end position and decelerates the load; it does not lock or hold the load without live air pressure.
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