Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 325mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke325 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-75S
The AirTAC SAIJ100X325-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 325 mm nominal stroke that can be dialed back by up to 75 mm, providing a usable travel window of 250 to 325 mm for precise end-position tuning at commissioning. Operating at 0.5 MPa, it generates 3927 N of push force and 3681 N of pull force, making it suitable for heavy-duty positioning tasks.
This variant includes a standard carbon steel piston rod and a magnetic piston (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel integrates sensor grooves on both sides. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR configurations.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 325 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100X325-75S Is Used
Product Size Changeovers
Dial in the 250 to 325 mm travel window on the fly when adapting machinery to different product lengths without physically swapping the actuator.
Heavy-Duty Positioning
Leverage 3927 N of push force at 0.5 MPa to move heavy pallets or fixtures into their exact final position with a fine-tuned mechanical stop.
Automated Assembly Lines
Integrate the magnetic piston with DMSE solid-state sensors to confirm end-of-stroke arrival on long-stroke assembly stations.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-75S the Right Cylinder?
Choose this 100 mm bore actuator when an application requires substantial thrust—such as 3927 N at 0.5 MPa or 5497 N at 0.7 MPa—combined with variable end-stops for product changeovers. If your force requirements are lower, stepping down to an 80 mm bore yields 2513 N of push force at 0.5 MPa. Conversely, if you need over 6000 N, a 125 mm bore provides 6136 N. The adjustable stroke prevents the need to swap cylinders or add external stops when refining the travel end. Because the 325 mm stroke is relatively long, an external guide is recommended to handle side loads and prevent rod deflection. For applications requiring the load to be held without live air pressure, note that the rear adjuster acts only as a travel stop, not a lock; you should select an AirTAC SAIL or BSAI cylinder instead. To replace an ISO 15552 cylinder, match the 100 mm bore, 325 mm stroke, 75 mm adjustment, G1/2 port, PT thread, and -S magnet.
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 SAIJ100 Adjustable Cylinder SAIJ100X325-75S FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 5497 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from its 325 mm nominal stroke down to 250 mm. This allows precise end-position tuning during commissioning without adding external stops, though it does not lock the load without live air.
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