Airtac Adjustable Cylinder SAIJ32 SAIJ32AX325-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX325-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 325mm 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
- Stroke325 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX325-20
The AirTAC SAIJ32X325-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 305 to 325 mm, letting you dial back the nominal stroke by up to 20 mm during commissioning. With a 32 mm bore, it delivers 402 N of push thrust and 345 N of pull force at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides, and this configuration uses a SUS420J2 stainless steel rod (material code A) alongside PT tapered port threads.
This model omits the FB, CA, CB, and CR mounting interfaces, offering a reduced set of Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments. Because the 325 mm stroke is relatively long for a 32 mm bore, the 12 mm rod and M10x1.25 thread still require an external guide to prevent excessive side-loading. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX325-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX325-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 325 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 SAIJ32AX325-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×325 | 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 SAIJ32AX325-20 Is Used
End-Position Tuning
Fine-tune the retract stroke within the 305-325 mm window during machine commissioning to achieve exact positioning without hardware changes.
Product Changeover
Quickly adapt the travel end-stop on automated lines when switching between product sizes, eliminating the need for external mechanical stops.
Customized Clamping
Dial in the exact 20 mm adjustment range to accommodate varying material thicknesses in clamping stations before applying the 402 N thrust.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX325-20 the Right Cylinder?
Choose this adjustable-stroke unit over a fixed SAI model when you need precise end-position tuning or frequent product-size changeovers without swapping the cylinder or bolting on external stops. If your application requires less force, stepping down is not an option here, but stepping up to a 40 mm bore yields 628 N of push force at 0.5 MPa. For load-holding without continuous air pressure, this plain cylinder is insufficient; you should select a SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead.
To match this ISO 15552 dimensionally interchangeable replacement, specify a 32 mm bore, 325 mm nominal stroke, 20 mm adjustment range, PT port threads, SUS420J2 rod material, and no magnet (-S omitted). Ensure your setup accommodates the 30-800 mm/s speed range and utilizes an external guide to manage side loads on the long 325 mm stroke.
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 SAIJ32AX325-20 FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. It can deliver up to 724 N of push force at 0.9 MPa.
The rear adjusting screw acts as a mechanical stopper that allows you to shorten the effective stroke by up to 20 mm. This creates a usable travel window of 305 to 325 mm, enabling fine-tuning of the end position without replacing the cylinder.
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