Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 290mm 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
- Stroke290 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-50S
The AirTAC SAIJ100X290-50-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 240 to 290 mm, allowing you to dial back the nominal 290 mm stroke by up to 50 mm during commissioning. Delivering 3927 N of push force at 0.5 MPa, it handles heavy actuation tasks while maintaining a standard ISO 15552 mounting footprint.
This SKU includes a SUS304 stainless steel rod for superior corrosion resistance and a built-in magnet (-S) for position sensing. You can pair it with AirTAC CMSE reed switches or DMSE solid-state sensors, which seat directly into the dual-side sensor grooves on the extruded aluminum barrel. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end, meaning it will not hold the load if air pressure is lost.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 290 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 SAIJ100BX290-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×290 | 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 SAIJ100BX290-50S Is Used
Product Changeover
Quickly fine-tune the retract distance up to 50 mm during packaging line format changes without replacing the cylinder.
Machine Setup
Dial in the exact end-of-stroke position during initial commissioning to prevent crashes and optimize press motions.
Variable End Stops
Provide a mechanical stop within the 240-290 mm travel window for heavy material handling actuators.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-50S the Right Cylinder?
Choose this 100 mm bore when your application requires substantial thrust, such as 3927 N push or 3681 N pull at 0.5 MPa. If you need less force, stepping down to an 80 mm bore yields 2513 N of push force. The adjustable stroke is ideal for machinery that requires variable end-stops or frequent product changeovers, saving you from swapping cylinders or adding external stopper blocks. For load-holding without continuous air pressure, consider the SAIL or BSAI series, as the SAIJ adjuster is not a locking mechanism.
Because the 290 mm stroke exceeds the 300 mm threshold, an external guide is recommended to prevent excessive side-loading on the 25 mm rod. This configuration features PT tapered port threads (G1/2 size) and supports a mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2. It is dimensionally interchangeable with ISO 15552 cylinders such as Festo DSBC or SMC CDQ2, offering a direct profile-cylinder replacement.
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 SAIJ100BX290-50S FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 801 kgf of push force.
The rear adjuster acts as a mechanical stop that shortens the effective travel. For this SAIJ100X290-50-S model, you can trim the 290 mm nominal stroke back by up to 50 mm, creating a 240 to 290 mm usable window. It is a travel stop, not a lock, and requires live air to hold the load.
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