Airtac SAIJ100 Adjustable Cylinder SAIJ100BX140-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX140-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 140mm 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
- Stroke140 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX140-40
The AirTAC SAIJ100X140-40 is a double-acting, single-rod ISO 15552 profile cylinder engineered for precise end-position tuning. It features a rear adjusting stopper that creates a usable travel window of 100-140 mm from the 140 mm nominal stroke. Delivering 3927 N of push force and 3681 N of pull force at 0.5 MPa, it is built to handle heavy loads in demanding pneumatic setups.
This model is equipped with a SUS304 stainless steel rod for superior corrosion resistance and a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of position switches. Because the rear adjuster acts only as a travel stop and the air cushions manage deceleration, this cylinder cannot hold a load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX140-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX140-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 140 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 SAIJ100BX140-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×140 | 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 SAIJ100BX140-40 Is Used
Machine Changeover
Dial in the 100-140 mm travel window during product size changeovers without physically swapping out the cylinder or adding external stopper blocks.
Variable End Stops
Fine-tune the retract end-position at machine commissioning to perfectly align heavy 3927 N push loads without mechanical rework.
Corrosive Assembly Lines
Leverage the SUS304 stainless steel rod for reliable actuation in washdown or mildly corrosive manufacturing environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX140-40 the Right Cylinder?
Choose this 100 mm bore cylinder when your application requires substantial thrust—up to 3927 N at 0.5 MPa—along with the flexibility to dial in the exact end-stop during commissioning or product changeovers. If you need less force, stepping down to the 80 mm bore yields 2513 N at 0.5 MPa, while the 125 mm bore provides 6136 N for heavier demands. The adjustable stroke is ideal for variable end stops, eliminating the need to swap cylinders or bolt on external stops for each new product size.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 140 mm stroke, up to 40 mm adjustment, PT port thread, and the Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting interface. Note that SAIJ omits the FB, CA, CB, and CR mountings. For applications requiring the load to be held without live air, select a SAIL pneumatic lock or BSAI clamp-lock cylinder instead, as the adjuster here is strictly a stop. The 140 mm stroke is short enough that side-loading is minimal, but always ensure adequate guiding for heavy offsets.
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 SAIJ100BX140-40 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder generates 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
The rear adjusting screw acts as a mechanical stop that lets you trim the effective travel back by up to 40 mm, creating a usable stroke window of 100-140 mm. It only sets the end position and does not lock or hold the load without continuous air pressure.
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