Airtac Adjustable Cylinder SAIJ32 SAIJ32AX225-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX225-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 225mm 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
- Stroke225 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX225-20
The AirTAC SAIJ32X225-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 225 mm nominal stroke that can be fine-tuned backward by up to 20 mm, creating a 205-225 mm usable travel window for exact end-position calibration. In the 32 mm bore class, it generates 402 N of push force and 345 N of pull force at 0.5 MPa. This variant uses a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and features PT tapered port threads.
The external adjustment screw acts purely as a mechanical stop to set the retract end-position, meaning it cannot hold a load without continuous live air pressure. Dimensionally interchangeable per ISO 15552, this unit supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2. The extruded aluminum barrel includes dual-side sensor grooves, and operating speed ranges from 30-800 mm/s.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX225-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX225-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 225 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 SAIJ32AX225-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×225 | 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 SAIJ32AX225-20 Is Used
Changeover Calibration
Dial in the 205-225 mm retract end-stop precisely during machine setup or product size transitions without swapping hardware.
Variable End-Stop Positioning
Set the exact retraction point for tooling alignment, using the rear stopper to compensate for mechanical wear over time.
Line Diverter Adjustment
Fine-tune the actuation length on packaging lines where diverter arms require slight stroke tweaks for different carton sizes.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX225-20 the Right Cylinder?
Choose this 32 mm bore if your application requires around 402 N thrust at 0.5 MPa; step down if your force needs are lower, or step up to the 40 mm bore (628 N push) for heavier payloads. An adjustable-stroke cylinder is selected over a fixed SAI model when you need to dial in the end-stop during commissioning or product changeover without adding external physical stops. To replace an ISO 15552 cylinder, match the 32 mm bore, 225 mm stroke, 20 mm adjustment, PT G1/8 port, and the appropriate mounting accessory.
Because the 225 mm stroke exceeds the 200 mm benchmark, the 12 mm rod diameter and M10x1.25 rod thread provide a robust interface, but long unsupported strokes still require an external guide to prevent side-load damage. Note that the rear adjuster and air cushions only decelerate the travel end; for true load-holding without live pressure, 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 SAIJ32AX225-20 FAQ
At an operating pressure of 0.5 MPa, this 32 mm bore cylinder provides a push force of 402 N and a pull force of 345 N. It can reach up to 724 N push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 225 mm nominal stroke by up to 20 mm. This creates a 205-225 mm usable travel window for fine-tuning the end position at commissioning. It functions as a stop, not a lock, and requires live air to hold the load.
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