Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-30S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 120mm 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
- Stroke120 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-30S
The AirTAC SAIJ100X120-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 90 to 120 mm. Built with a SUS420J2 stainless steel rod (code A) and a PT tapered port thread, it delivers robust thrust, generating 3927 N of push force and 3681 N of pull force at 0.5 MPa. The extruded aluminum barrel features sensor grooves on both sides to accommodate position feedback.
This adjustable variant lets you dial in the exact retract end-position during commissioning or product changeover without swapping out the cylinder or adding external stops. The rear adjuster acts purely as a mechanical travel stop to set the stroke end, not as a lock, meaning it will not hold a load safely without live air pressure. For secure load-holding without continuous air supply, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-30S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 120 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 SAIJ100AX120-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×120 | 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 SAIJ100AX120-30S Is Used
Machine Changeover
Quickly adapt end positions for different product sizes on a packaging line without physically replacing the actuator.
Variable End Stops
Fine-tune the retract stroke within a 90 to 120 mm window during initial commissioning to achieve exact positioning.
Sensor-Ready Positioning
Utilize the integrated magnet and dual sensor grooves to mount CMSE reed or DMSE electronic switches for precise feedback.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX120-30S the Right Cylinder?
Choose this 100 mm bore when an 80 mm bore (yielding 2513 N push at 0.5 MPa) is insufficient, but a 125 mm bore (6136 N push) would be excessive. The SAIJ100X120-30-S is selected specifically for setups needing a variable end-stop, giving operators a 90 to 120 mm window to fine-tune machine strokes on the fly. When replacing an ISO 15552 cylinder, verify the 120 mm stroke, 30 mm adjustment range, PT port threads, and the -S magnet for CMSE or DMSE sensors.
Because the nominal stroke is 120 mm, side-loading is less of a concern than with longer strokes, but the 25 mm rod diameter and M20x1.5 thread still require alignment to prevent premature seal wear. Supported mountings include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ100AX120-30S FAQ
At an operating pressure of 0.5 MPa, this 100 mm bore cylinder generates a push force of 3927 N and a pull force of 3681 N. At 0.7 MPa, the push force increases to 5497 N.
The rear mechanical adjuster allows you to shorten the 120 mm nominal stroke by up to 30 mm, creating a usable travel window of 90 to 120 mm. This stop only sets the end position and does not lock the load without live air pressure.
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