Airtac Adjustable Cylinder SAIJ32 SAIJ32AX325-50
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX325-50 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 SAIJ32AX325-50
The AirTAC SAIJ32X325-50 is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, delivering 402N of push force at 0.5 MPa. Its 325mm nominal stroke can be dialed back by up to 50mm, creating a 275-325mm usable travel window for precise end-position tuning. The piston rod uses SUS420J2 stainless steel, and the fluid port features a PT tapered thread.
Because the 325mm stroke is relatively long for a 32mm bore, an external guide is recommended to prevent excessive side-load wear on the rod. The rear adjuster acts strictly as a travel stop to decelerate the load, not as a lock, meaning it cannot hold a load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX325-50 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX325-50 |
|---|---|
| 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 SAIJ32AX325-50
| 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 SAIJ32AX325-50 Is Used
Variable End-Stops
Dial in the 275-325mm travel window during product size changeovers on a packaging line without replacing the cylinder.
Machine Setup
Fine-tune the retract position at commissioning to perfect the alignment of delicate pneumatic pick-and-place operations.
Fixture Adjustment
Adjust the stroke on the fly to accommodate varying material lengths in a clamping fixture.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX325-50 the Right Cylinder?
Choose this 32mm bore cylinder when you need 402N of push force at 0.5 MPa and variable end-stops for machine changeovers. If your application requires higher thrust, stepping up to a 40mm bore provides 628N of push force. The SAIJ32X325-50 is selected over a fixed-stroke SAI when commissioning requires fine-tuning without swapping cylinders or adding external stops.
For load-holding without continuous air pressure, this cylinder is insufficient since the rear adjuster is only a stop; consider the SAIL or BSAI series instead. This configuration includes a 325mm stroke, 50mm adjustment, PT port, and SUS420J2 rod material, with no magnet specified for sensors.
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 SAIJ32AX325-50 FAQ
At 0.5 MPa operating pressure, this 32mm bore cylinder provides 402N of push force and 345N of pull force. At the maximum pressure of 1.0 MPa, it delivers up to 801 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 50mm from the nominal 325mm, providing a usable travel window of 275-325mm. It functions as a mechanical stop and cannot hold the load without live air pressure.
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