Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-100S 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 SAIJ125AX230-100S
The AirTAC SAIJ125X230-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a substantial 6136N push force at 0.5 MPa, utilizing a 32mm piston rod and G1/2 port. Because of the 100mm adjustment code, this SKU allows you to dial back the nominal 230mm stroke anywhere down to 130mm. This wide 130-230mm usable travel window is ideal for machinery that processes varying product sizes, letting you fine-tune the retract end-position at commissioning without swapping out the entire actuator.
This specific configuration includes a magnet for position sensing, working seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches housed in the dual-side sensor grooves. The rod is constructed from SUS420J2 stainless steel (material code A) for enhanced durability against moisture, and it features PT tapered port threads. The rear adjuster functions purely as a mechanical stop to set the travel end and relies on the integrated air cushions for deceleration; it is not a locking mechanism and will not hold a load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-100S |
|---|---|
| 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 SAIJ125AX230-100S
| 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 SAIJ125AX230-100S Is Used
Product Changeover Adjustment
Ideal for packaging lines that run multiple carton sizes. The 100mm adjustment window lets operators dial in the exact end-stop position for a new product run without changing the cylinder.
Pressing & Forming
Delivers 6136N of thrust at 0.5 MPa for medium-duty forming tasks. The rear stopper allows precise tuning of the pressing depth during machine commissioning.
Heavy Duty Gating
Provides robust actuation for large material flow gates. The SUS420J2 stainless steel rod offers reliable performance in environments with high humidity or minor washdowns.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-100S the Right Cylinder?
Choose this 125mm bore when an 80mm cylinder falls short of the required thrust. An 80mm SAIJ provides 2513N of push force at 0.5 MPa, whereas this 125mm bore delivers 6136N at the same pressure, making it the right step up for heavy pressing or clamping. The 100mm adjustment range is exceptionally wide, allowing a single cylinder to accommodate multiple product changeovers on a packaging line by simply turning the rear stopper screw, rather than installing a fixed-stroke SAI cylinder for every different part size.
When specifying this ISO 15552 interchangeable actuator, confirm the 125mm bore, 230mm stroke, 100mm adjustment, PT port threads, and the -S magnet requirement. For load-holding applications without continuous live air, this standard SAIJ adjuster will not suffice; you should instead explore the SAIL pneumatic lock series or an external pilot-operated check valve. Additionally, while the 32mm SUS420J2 rod handles high side-loading well, any application approaching the maximum standard stroke limit for this bore should incorporate an external guide to prevent rod deflection.
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 SAIJ125AX230-100S FAQ
At an operating pressure of 0.5 MPa, this 125mm bore cylinder generates 6136N of push force and 5734N of pull force. If you increase the pressure to 0.7 MPa, the push force rises to 8590N.
The nominal stroke is 230mm, but the external rear adjusting screw allows you to shorten the effective travel by up to 100mm. This creates a 130-230mm usable travel window, letting you set the exact retract end-position during setup without adding external stops.
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