Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-20S 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 SAIJ100BX290-20S
The AirTAC SAIJ100X290-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 270 to 290 mm usable travel window. Equipped with a SUS304 stainless steel rod and a PT G1/2 port, it delivers 3927 N of push force at 0.5 MPa, scaling up to 7068 N at 0.9 MPa. The integrated magnet supports CMSE reed and DMSE electronic sensors, fitting neatly into the extruded aluminum barrel's dual sensor grooves.
This adjustable model allows precise end-position tuning during commissioning without adding external stops. It uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. The rear adjuster functions purely as a travel stop and deceleration point, meaning it will not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-20S |
|---|---|
| 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 SAIJ100BX290-20S
| 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 SAIJ100BX290-20S Is Used
Machine Setup Tuning
Dial in the 270-290 mm travel window during initial commissioning to achieve precise end-positioning without machining external stopper blocks.
Product Changeover
Quickly adjust the retract stop to accommodate different package sizes on a conveyor line, reducing downtime between production runs.
Deceleration Testing
Use the variable end-stop alongside the standard air cushions to test and set the optimal deceleration profile for moving loads.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX290-20S the Right Cylinder?
Choose this 100 mm bore when you need higher thrust than the 80 mm version, which provides 2513 N at 0.5 MPa, but do not require the 6136 N output of the 125 mm size. The 20 mm adjustment range is ideal for product changeovers on a packaging line, letting you dial in the exact end-stop without swapping the cylinder. For true load-holding without continuous air pressure, consider the SAIL pneumatic lock or BSAI clamp-lock cylinders instead.
Because the 290 mm stroke exceeds 300 mm when fully extended, you must account for potential side loads. The 25 mm rod and M20x1.5 thread provide robust resistance, but an external guide rail is recommended to prevent binding over long unsupported travels. This SAIJ variant is dimensionally interchangeable per ISO 15552, using a tapered PT port and the -S magnet option.
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 SAIJ100BX290-20S FAQ
At 0.5 MPa it provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster acts as a mechanical stop, allowing you to shorten the 290 mm nominal stroke by up to 20 mm, resulting in a 270 to 290 mm usable travel window.
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