Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 125mm 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
- Stroke125 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-75S
The AirTAC SAIJ100X125-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 50 to 125 mm. It delivers a robust 3927 N of push force at 0.5 MPa, making it well-suited for heavy manipulation tasks. The integrated -S magnet enables position detection via AirTAC CMSE reed and DMSE electronic sensors.
This variant features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting the FB, CA, CB, and CR options.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 125 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 SAIJ100AX125-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×125 | 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 SAIJ100AX125-75S Is Used
Product Size Changeovers
Quickly adapt machinery for different product lengths by dialing the stroke back up to 75 mm, avoiding the need to physically swap out the entire cylinder.
End-Position Tuning
Fine-tune the exact retracted end position during machine commissioning to perfect the timing of heavy 3927 N push operations.
Heavy Assembly Stations
Leverage the robust 100 mm bore and SUS420J2 stainless rod for durable, high-force actuation in demanding industrial assembly lines.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-75S the Right Cylinder?
Choose this 100 mm bore when an application requires substantial force—such as the 3927 N push at 0.5 MPa—but also demands variable end-position tuning. The 75 mm rear adjuster screw allows you to dial back the stroke during commissioning or product changeover without physically swapping the cylinder or adding external mechanical stops. If your process requires less force, stepping down to an 80 mm bore yields 2513 N of push force at 0.5 MPa.
For an ISO 15552 replacement, match the 100 mm bore, 125 mm nominal stroke, 75 mm adjustment range, PT port threads, and -S magnet. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series. Because the nominal stroke is 125 mm, an external guide is not strictly required, but the M20x1.5 rod thread handles moderate side loads effectively.
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 SAIJ100AX125-75S FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 75 mm. This creates a usable travel window between 50 and 125 mm, letting you set the exact retract position without changing the cylinder.
At a 0.5 MPa operating pressure, it provides 3927 N of push force and 3681 N of pull force. At the maximum 1.0 MPa pressure, the push force reaches 801 kgf.
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