Airtac SAIJ125 Adjustable Cylinder SAIJ125AX75-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX75-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX75-10S
The AirTAC SAIJ125X75-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 65-75 mm. Delivering 6136 N of push force at 0.5 MPa, it handles heavy positioning tasks. The SUS420J2 stainless steel rod provides high corrosion resistance, and the integrated magnet works seamlessly with CMSE reed and DMSE solid-state sensors.
This adjustable-stroke design allows precise end-position tuning at commissioning without adding external stops. It features a PT tapered port, variable air cushions at both ends, and a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) omitting FB, CA, CB, and CR. The rear adjuster acts only as a travel stop, not a load lock.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX75-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX75-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 75 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 SAIJ125AX75-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×75 | 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 SAIJ125AX75-10S Is Used
Changeover Calibration
Dial in the exact 65-75 mm retract position during product size changeovers without swapping out the entire cylinder assembly.
Heavy Clamping Stops
Provide up to 6136 N of clamping force at 0.5 MPa while using the rear screw to fine-tune the exact end-stop location.
Sensor-Ready Positioning
Leverage the integrated magnet with DMSE solid-state sensors for precise machine feedback in automated assembly lines.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX75-10S the Right Cylinder?
Choose this 125 mm bore when a 100 mm bore (3927 N at 0.5 MPa) lacks thrust, but a 160 mm bore is physically oversized. The 10 mm adjustable stroke is ideal for fine-tuning the retract end during product changeovers on the line. For strokes of 300 mm or more, an external guide is recommended to manage side loads, though this 75 mm travel is well within safe rod limits.
To match this ISO 15552 cylinder, specify the 125 mm bore, 75 mm stroke, 10 mm adjustment, PT port thread, and the -S magnet. If your machine requires true load holding without live air pressure, select a SAIL lock cylinder or a BSAI clamp-lock instead, as the SAIJ rear adjuster and cushions only decelerate the travel end.
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 SAIJ125AX75-10S FAQ
At 0.5 MPa it provides 6136 N push and 5734 N pull force. The operational speed range is 30-500 mm/s.
The rear adjuster screw lets you shorten the 75 mm nominal stroke by up to 10 mm, creating a 65-75 mm travel window for precise end-position tuning.
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