Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 230mm 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
- Stroke230 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-10
The AirTAC SAIJ125X230-10 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 220-230 mm, allowing you to dial back the nominal 230 mm stroke by up to 10 mm during commissioning without adding external stops. Belonging to the 125 mm bore class, it generates 6136 N of push force and 5734 N of pull force at 0.5 MPa. This extruded aluminum body includes sensor grooves on both sides, and this specific configuration uses a SUS420J2 stainless steel rod (code A) with PT tapered port threads.
The rear adjustment screw acts purely as a mechanical stop to fine-tune the retract end position, working alongside the variable air cushions at both ends. It is not a locking mechanism, meaning the cylinder cannot hold a load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found on some standard cylinders.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 230 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 SAIJ125AX230-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×230 | 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 SAIJ125AX230-10 Is Used
Machine Changeover
Quickly fine-tune the 220-230 mm retract position during product size changeovers without replacing the cylinder or adding external stopper blocks.
End-Position Calibration
Dial in the exact end-of-stroke contact point during commissioning to optimize pressing or clamping force in automated assembly lines.
Heavy-Duty Positioning
Leverage the 125 mm bore's 6136 N push force to move heavy pallets or fixtures, using the 10 mm adjuster to absorb minor mechanical variances.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-10 the Right Cylinder?
Choose this 125 mm bore adjustable-stroke cylinder when your application requires substantial thrust—6136 N at 0.5 MPa—and on-the-fly end-position tuning. If your force requirements are lower, stepping down to a 100 mm bore yields 3927 N of push force at 0.5 MPa, whereas moving up to a 160 mm bore provides 10053 N. The adjustable stroke is ideal for product changeovers or machine setups where the exact end-of-travel position varies slightly, saving the hassle of physically swapping out a fixed-stroke SAI cylinder.
Because the nominal stroke is 230 mm, an external guide is recommended to prevent excessive side-loading on the 32 mm rod. As an ISO 15552 dimensionally interchangeable cylinder, it matches standard mounting footprints. This SKU is configured without a magnet (-S not specified), so position sensing via CMSE reed or DMSE electronic sensors is not supported out of the box. For load-holding without continuous air pressure, you must integrate an external rod lock or pilot-operated check valve, as the rear adjuster only provides a travel stop.
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 SAIJ125AX230-10 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder generates a push force of 6136 N and a pull force of 5734 N. At the maximum 1.0 MPa pressure, it can deliver up to 1251 kgf.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective travel from the 230 mm nominal stroke down to 220 mm. This provides a 220-230 mm adjustable window for fine-tuning the end position without swapping the cylinder.
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