Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 105mm 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.
- BoreØ125 mm
- Stroke105 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-100
The AirTAC SAIJ125X105-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 105 mm stroke that can be dialed back by up to 100 mm, yielding a highly versatile 5 to 105 mm usable travel window for exact end-position tuning at commissioning. The M27x2 piston rod is equipped with a SUS420J2 stainless steel material (code A) for superior corrosion resistance, and the body uses PT tapered port threads.
Operating at 0.15 to 1.0 MPa, this bore generates 6136 N of push force and 5734 N of pull force at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed and DMSE electronic switches, though this specific SKU is not equipped with a magnet. The rear adjuster acts purely as a mechanical stop to set the retract end; it does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 105 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×105 | 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 SAIJ125 Adjustable Cylinder SAIJ125AX105-100 Is Used
Variable End-Stop Setup
Dial in the retract position anywhere from 5 to 105 mm during machine commissioning to set precise pressing depths without adding external physical stops.
Product-Size Changeover
Quickly adapt a packaging or forming line to different carton heights by turning the rear screw, saving downtime on manual cylinder swaps.
High-Force Positioning
Leverage the 6136 N push force at 0.5 MPa to move heavy pallets or molds into exact final positions with repeatable mechanical stops.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-100 the Right Cylinder?
Choose this 125 mm bore when an application requires substantial thrust—such as 6136 N push at 0.5 MPa—combined with extreme stroke variability. The 100 mm adjustment range allows a single cylinder to handle product-size changeovers on a line without swapping the physical unit, unlike a fixed-stroke SAI cylinder. If 6136 N is excessive, step down to the 100 mm bore (3927 N push at 0.5 MPa); if more force is needed, step up to the 160 mm bore (10053 N push at 0.5 MPa).
When replacing an ISO 15552 cylinder, match the 125 mm bore, 105 mm stroke, 100 mm adjustment, PT port thread, and SUS420J2 rod material. Because the stroke is 105 mm, side-load risk is minimal, but the heavy M27x2 rod still requires an external guide for large offset loads. For applications needing dead-stop holding without live air, select the SAIL (air-released lock) or BSAI (clamp-lock) instead of relying on the SAIJ adjuster. Mounting options are limited to 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 SAIJ125 Adjustable Cylinder SAIJ125AX105-100 FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from 105 mm down to as little as 5 mm. This provides a 5-105 mm adjustable travel window for fine-tuning the end position without replacing the cylinder.
At 0.5 MPa, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. It can deliver up to 1251 kgf at its maximum operating pressure of 1.0 MPa.
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