Airtac SAIJ125 Adjustable Cylinder SAIJ125X230-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X230-30S 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 SAIJ125X230-30S
The AirTAC SAIJ125X230-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a usable travel window of 200 to 230 mm, allowing you to trim the nominal 230 mm stroke by up to 30 mm during commissioning. Delivering a substantial 8590 N push force at 0.7 MPa, it is built to handle heavy-duty automation tasks.
This model features a carbon steel piston rod with an M27x2 thread and uses PT tapered port threads. The integrated -S magnet supports position sensing via AirTAC CMSE reed switches or DMSE electronic solid-state sensors. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X230-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X230-30S |
|---|---|
| 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 SAIJ125X230-30S
| 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 SAIJ125X230-30S Is Used
Variable End-Stop Positioning
Dial in the exact retract distance between 200 and 230 mm to accommodate varying product dimensions without mechanical rebuilds.
Machine Changeover Setup
Quickly adjust the stroke end-position during product line transitions to maintain precise timing and positioning.
Heavy-Duty Forming Press
Leverage the 8590 N push force at 0.7 MPa for pressing or clamping operations that require slight travel adjustments.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X230-30S the Right Cylinder?
Choose this 125 mm bore when your application requires over 8000 N of thrust and the flexibility to fine-tune the end position without swapping cylinders or adding external stops. If your force requirements are lower, stepping down to an 80 mm bore yields 3518 N at 0.7 MPa, while moving up to a 160 mm bore provides 14074 N. The rear adjuster acts purely as a mechanical stop for deceleration and positioning; it does not hold the load without live air pressure. For secure load-holding, consider an SAIL pneumatic lock or BSAI clamp-lock cylinder.
Because this is a true ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 cylinders of the same bore and stroke. When replacing a unit, match the 230 mm stroke, 30 mm adjustment range, PT port threads, and the -S magnet requirement. The robust 32 mm rod diameter handles high side loads well, though for long unsupported strokes of 300 mm or more, an external guide rail is still recommended to prevent premature wear.
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 SAIJ125X230-30S FAQ
At an operating pressure of 0.7 MPa, this 125 mm bore cylinder generates 8590 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 1251 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 30 mm, creating a usable travel window of 200 to 230 mm. This stopper fine-tunes the end position but does not lock or hold the load without continuous air pressure.
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