Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-30S 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 SAIJ125AX230-30S
The AirTAC SAIJ125X230-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 230 mm travel by up to 30 mm for a precise 200-230 mm usable window. It delivers 6136 N of push force at 0.5 MPa and 8590 N at 0.7 MPa, making it suited for heavy-duty positioning tasks.
This variant features a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and includes a magnet (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel provides standard ISO 15552 mounting dimensions while incorporating sensor grooves on both sides for flexible switch placement.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-30S |
|---|---|
| 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 SAIJ125AX230-30S
| 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 SAIJ125AX230-30S Is Used
Product Changeovers
Quickly adjust the 200-230 mm travel window during line format changes to accommodate different product lengths without changing hardware.
Heavy Positioning
Leverage the 8590 N push force at 0.7 MPa to move heavy jigs into exact alignment, using the rear stopper to dial in the final contact point.
Machine Setup
Fine-tune the end-of-stroke position during initial commissioning to prevent mechanical interference, relying on the 30 mm trim range.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX230-30S the Right Cylinder?
Select this 125 mm bore cylinder when a smaller 100 mm bore (providing 3927 N push at 0.5 MPa) lacks the thrust for your dynamic loads, but an 80 mm bore (2513 N) is undersized. The 30 mm adjustable stroke is perfect for fine-tuning the retract end-position during machine commissioning or product changeovers without swapping the cylinder or adding external stops. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pneumatic pressure, consider an AirTAC SAIL or BSAI cylinder. To replace an ISO 15552 cylinder, match the 125 mm bore, 230 mm stroke, PT tapered port thread, and the required mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
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 SAIJ125AX230-30S FAQ
At 0.5 MPa it provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
The rear adjuster screw allows you to shorten the 230 mm nominal stroke by up to 30 mm, creating a 200-230 mm travel window. It acts as a mechanical stop to fine-tune the end position and does not lock the load without air pressure.
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Standard models usually ship in 3-4 days.
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