Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-75S 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 SAIJ125AX105-75S
The AirTAC SAIJ125X105-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 30-105 mm from its 105 mm nominal stroke. Delivering 6136 N of push force at 0.5 MPa, it handles heavy-duty motion tasks. The -S magnet integrates seamlessly with AirTAC CMSE reed and DMSE electronic sensors for precise position feedback.
This model features a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and utilizes PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and the adjustable rear stopper allows you to fine-tune end positions during commissioning without adding external stops.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-75S |
|---|---|
| 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 SAIJ125AX105-75S
| 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 SAIJ125AX105-75S Is Used
Machine Setup & Changeover
Dial in the exact 30-105 mm travel window during product size changeovers without swapping out the entire cylinder assembly.
Variable End-Stop Positioning
Use the rear adjusting screw to fine-tune the retract position precisely during machine commissioning or maintenance routines.
Heavy-Duty Positioning
Leverage the 6136 N thrust capacity and CMSE/DMSE sensor compatibility for robust, repeatable actuation in demanding industrial environments.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX105-75S the Right Cylinder?
Choose this 125 mm bore cylinder when your application requires the 6136 N push force at 0.5 MPa; step down to an 80 mm bore (2513 N push) if your load is lighter, or up to a 160 mm bore (10053 N) for heavier demands. The adjustable stroke is ideal for machine setups requiring variable end-stops or product changeovers.
Remember that the rear adjuster functions strictly as a travel stop, not a lock; this SAIJ will not hold a load without live air pressure. For secure load-holding, consider an AirTAC SAIL or BSAI cylinder. Because the total stroke is 105 mm, side-load is minimal, but always ensure the M27x2 rod thread is properly aligned to prevent binding.
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 SAIJ125AX105-75S FAQ
It features a rear adjusting screw that allows you to shorten the effective stroke by up to 75 mm. This creates a usable travel window of 30-105 mm, letting you fine-tune the end position without adding external mechanical stops.
At 0.5 MPa operating pressure, it provides 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, the push force reaches 1251 kgf.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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