Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-100
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 240mm 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
- Stroke240 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-100
The AirTAC SAIJ100X240-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. With a nominal 240 mm stroke and a 100 mm adjustment range, it provides a usable travel window of 140 to 240 mm. This allows you to fine-tune the retract end position at commissioning without swapping out the physical cylinder. In the 100 mm bore class, it delivers 3927 N of push force at 0.5 MPa and up to 7068 N at 0.9 MPa.
This variant is built with a SUS304 (B) stainless steel rod for superior corrosion resistance and ships without a magnet. The extruded aluminum barrel includes sensor grooves on both sides, and if position detection is later required, adding a magnet would enable the use of AirTAC CMSE reed or DMSE electronic solid-state switches. The rear adjuster acts strictly as a mechanical stop to set the travel end and does not hold the load without live air pressure; for true pneumatic load-holding, consider the SAIL or BSAI series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-100 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 240 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 SAIJ100BX240-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×240 | 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 SAIJ100BX240-100 Is Used
Machine Changeover
Dial in the retract position within the 140-240 mm window during product size changes without replacing the cylinder or adding external mechanical stops.
End-Position Tuning
Fine-tune the exact end of stroke at machine commissioning to absorb mechanical tolerances and achieve precise positioning using the rear adjuster screw.
Variable End Stops
Set distinct retract positions on an assembly line to accommodate different part heights or tooling depths quickly and reliably.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX240-100 the Right Cylinder?
Choose the 100 mm bore when the 80 mm bore (delivering 2513 N push at 0.5 MPa) is insufficient for your actuation needs, or step down if the 125 mm bore (6136 N at 0.5 MPa) provides unnecessary excess capacity. The SAIJ100X240-100 is selected over a fixed-stroke SAI cylinder when a machine setup requires variable end-stops or product-size changeovers, letting you dial in the exact position within its 140-240 mm window.
To replace this cylinder in an ISO 15552 system, match the 100 mm bore, 240 mm nominal stroke, 100 mm adjustment range, PT tapered port thread, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2; note that FB, CA, CB, and CR are omitted). Because the nominal stroke is 240 mm, an external guide is recommended to manage side loads on the 25 mm rod over extended travel.
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 SAIJ100BX240-100 FAQ
At 0.5 MPa operating pressure, the 100 mm bore 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 screw acts as a mechanical stop, allowing you to shorten the effective travel from the 240 mm nominal stroke down to 140 mm. It sets the end position but does not lock or hold the load without continuous air pressure.
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