Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-20 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 SAIJ100BX290-20
The AirTAC SAIJ100X290-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 290 mm stroke that can be fine-tuned down by up to 20 mm, giving operators a 270-290 mm usable travel window during commissioning. Delivering 3927 N of push force at 0.5 MPa, it handles heavy loads without requiring external stops.
This model features a SUS304 stainless steel rod (option B) for superior corrosion resistance and uses a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE or DMSE switches if a magnet is added later. It utilizes variable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-20 |
|---|---|
| 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 SAIJ100BX290-20
| 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 SAIJ100BX290-20 Is Used
Machine Setup & Changeover
Fine-tune the 270-290 mm travel window during product size changes to set precise end positions without adding external mechanical stops.
Heavy Material Handling
Leverage the 3927 N push force at 0.5 MPa to move heavy workpieces while dialing in the exact retraction point for varied payload sizes.
Press & Forming Operations
Use the rear stopper to set precise bottoming positions for pressing tasks, ensuring consistent results across different tooling setups.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-20 the Right Cylinder?
Choose this 100 mm bore when you need higher thrust than a 80 mm bore (which provides 2513 N push at 0.5 MPa) but want to avoid the bulk of a 125 mm cylinder. The adjustable stroke is ideal for product changeovers on a line, letting you dial in the exact end position without swapping the cylinder. For a direct ISO 15552 replacement, match the 100 mm bore, 290 mm stroke, 20 mm adjustment, PT ports, and SUS304 rod.
Because the stroke is 290 mm, the M20x1.5 rod should be guided externally to prevent excessive side-loading and premature seal wear. Note that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For load-holding without pressure, consider an external rod lock or the AirTAC SAIL series.
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 SAIJ100BX290-20 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 20 mm. This creates a 270-290 mm usable travel window, enabling fine-tuning of the end position at commissioning without replacing the cylinder.
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