Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 180mm 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
- Stroke180 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-20
The AirTAC SAIJ100X180-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, letting you dial back the nominal 180 mm travel to a 160-180 mm usable window during commissioning. It delivers substantial thrust, offering 3927 N of push force and 3681 N of pull force at 0.5 MPa. The bore uses a G1/2 port and a robust 25 mm rod with an M20x1.5 thread.
This SKU features a SUS304 stainless steel rod (option B) for superior corrosion resistance and carries variable air cushions at both ends to decelerate heavy loads. The extruded aluminum barrel includes sensor grooves on both sides, though this specific configuration omits the magnet, so position sensing via CMSE reed or DMSE electronic switches requires adding the -S option.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 180 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 SAIJ100BX180-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×180 | 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 SAIJ100BX180-20 Is Used
Machine Setup Changeover
Dial in the exact end-stop position during product size changes without machining new hard stops or replacing the entire actuator.
Variable End-Stop Positioning
Adjust the travel window on the fly to accommodate multiple part lengths on a single assembly line using the rear fine-tune screw.
High-Force Pressing
Leverage the 3927 N push force at 0.5 MPa for pressing or forming tasks while precisely controlling the final approach distance.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-20 the Right Cylinder?
Choose this 100 mm bore when your application requires high force, stepping up from an 80 mm bore that provides 2513 N push at 0.5 MPa. The adjustable stroke is ideal for product changeovers on a line, allowing you to fine-tune the end position without swapping the cylinder or bolting on external stops. When matching ISO 15552 replacements, specify the 100 mm bore, 180 mm stroke, 20 mm adjustment, PT tapered port threads, and your required mounting from the SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2—omitting FB, CA, CB, CR).
Because the rear adjuster acts only as a travel stop and the air cushions manage deceleration, neither will hold the load without live air pressure. For load-holding without continuous pressure, consider the SAIL air-released lock, the BSAI clamp-lock, or an external rod lock. Additionally, while the 25 mm rod handles side loads well, any stroke of 300 mm or more requires an external guide to prevent rod deflection.
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 SAIJ100BX180-20 FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder provides a push force of 3927 N and a pull force of 3681 N. If you increase the pressure to 0.7 MPa, the push force rises to 5497 N.
The rear adjuster screw acts as an external stopper, allowing you to shorten the effective stroke from the nominal 180 mm down to 160 mm. This creates a 160-180 mm usable travel window for fine-tuning the retract end position without swapping the cylinder.
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