Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-20 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 SAIJ32BX425-20
The AirTAC SAIJ32X425-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to trim the effective travel back by up to 20 mm. This creates a highly useful 405-425 mm usable travel window, letting you dial in the exact end position during machine commissioning without adding external stops. It delivers 402 N of push force at 0.5 MPa and 724 N at 0.9 MPa, making it well-suited for compact mid-stroke positioning tasks.
This specific configuration incorporates a SUS304 stainless steel rod (material code B) for superior corrosion resistance, paired with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. Remember that the rear adjuster acts purely as a travel stop to set the end position; it does not lock or hold the load without continuous live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-20 |
|---|---|
| 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 SAIJ32BX425-20
| 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 SAIJ32BX425-20 Is Used
Machine Changeover
Fine-tune the 405-425 mm travel window during product size changes to set new end positions rapidly without swapping cylinders.
Component Positioning
Dial in the exact retract distance for delicate assembly tasks, using the rear stopper to perfect the end-of-stroke location.
Compact Automation
Leverage the 32 mm profile barrel and 12 mm rod to deliver 402 N of push force in space-constrained automated machinery.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX425-20 the Right Cylinder?
Choose this 32 mm bore when you need precise, variable end-stops in a lighter force class; if your application requires more push power, stepping up to the 40 mm bore yields 628 N at 0.5 MPa. The adjustable stroke is ideal for product changeovers or fine-tuning setup on the fly, whereas a fixed SAI cylinder locks you into a single exact dimension. Because the total stroke is 425 mm, the 12 mm diameter rod and M10x1.25 rod thread will see increased leverage forces, so an external guide is recommended to prevent side-loading damage.
To replace an ISO 15552 cylinder with this SKU, match the 32 mm bore, 425 mm nominal stroke, 20 mm adjustment, PT port thread, and standard mounting interface. The SAIJ series supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, deliberately omitting FB, CA, CB, and CR options. Note that for load-holding without live air, you must look to the SAIL or BSAI series, as this adjuster is not a brake.
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 SAIJ32BX425-20 FAQ
At 0.5 MPa it provides 402 N of push force and 345 N of pull force. At 0.9 MPa, the push force increases to 724 N. The operational speed range for this 32 mm bore is 30-800 mm/s.
The rear adjuster screw lets you shorten the 425 mm nominal stroke by up to 20 mm, providing a 405-425 mm usable travel window. It functions as a mechanical stop for end-position tuning and does not hold the load without live air pressure.
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