Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-100S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 425mm 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
- Stroke425 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-100S
The AirTAC SAIJ100X425-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 5497N of push force at 0.7 MPa. Its 425mm nominal stroke can be dialed back by up to 100mm, creating a precise 325-425mm usable travel window. This allows operators to fine-tune end positions during commissioning without adding external stops.
Built with a SUS304 stainless steel rod for superior corrosion resistance, this model includes a magnet for position sensing. It pairs seamlessly with AirTAC CMSE reed and DMSE electronic switches fitted into the dual-side sensor grooves on the extruded aluminum barrel. The robust 25mm rod and M20x1.5 thread handle high side loads, while the PT threaded G1/2 port ensures reliable airflow.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-100S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 425 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 SAIJ100BX425-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100BX425-100S Is Used
Variable End-Stop Forming
Dial in the 325-425mm travel window to accommodate different material lengths in metal forming presses without physically swapping the actuator.
Machine Setup Changeover
Quickly reconfigure end positions during product family transitions on packaging lines using the 100mm rear adjustment screw.
Heavy-Duty Product Handling
Leverage the 5497N push force at 0.7 MPa to move heavy pallets or chassis, relying on the SUS304 rod in mildly corrosive washdown environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX425-100S the Right Cylinder?
Select this 100mm bore cylinder when an application requires heavy thrust—such as 5497N push at 0.7 MPa—combined with variable end-stops for product changeovers. If your process needs less force, stepping down to an 80mm bore yields 3518N push at 0.7 MPa. Choose this adjustable SAIJ over a fixed-stroke SAI when you need on-the-fly stroke trimming across the 325-425mm range. To replace an ISO 15552 cylinder, match the 100mm bore, 425mm stroke, PT port, and -S magnet.
Because the 425mm stroke is relatively long, ensure external guiding is used to prevent rod binding under heavy side loads. Remember that the rear adjuster acts only as a travel stop, not a lock; the cylinder cannot hold a load without live air. For true load-holding, consider an AirTAC SAIL or BSAI cylinder, or an external rod lock.
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 SAIJ100BX425-100S FAQ
The rear adjuster screw acts as a mechanical stop that shortens the retract stroke. For this model, you can trim the 425mm nominal stroke back by up to 100mm, providing an effective usable travel window of 325-425mm for fine-tuning at commissioning.
At 0.7 MPa operating pressure, the SAIJ100X425-100-S generates 5497N of push force and 5181N of pull force. It can deliver a maximum push force of 7068N at 0.9 MPa.
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