Airtac SAIJ125 Adjustable Cylinder SAIJ125AX180-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX180-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 180mm 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
- Stroke180 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX180-10
The AirTAC SAIJ125X180-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the end-of-travel position without swapping out the unit. It provides a usable travel window of 170-180 mm, letting you dial in the exact retraction point during machine commissioning. Featuring a robust 125 mm bore, it delivers 6136 N of push force at 0.5 MPa, making it suitable for heavy-duty positioning tasks.
This model features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic solid-state switches if a magnet is added later. The rear adjuster acts purely as a mechanical stop to set the travel limit and does not lock the load without continuous air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX180-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX180-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 180 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 SAIJ125AX180-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×180 | 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 SAIJ125AX180-10 Is Used
Product Changeover
Quickly reconfigure the 170-180 mm travel window on packaging lines when switching to different container sizes without replacing the cylinder.
Heavy Pressing
Leverage the 6136 N push force at 0.5 MPa for heavy assembly pressing tasks, using the fine adjustment to dial in the exact contact depth.
Machine Setup
Use the rear stopper screw during initial commissioning to perfectly align heavy end-effectors, avoiding the need to machine custom spacer blocks.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX180-10 the Right Cylinder?
Select this 125 mm bore cylinder when your application requires substantial force, stepping up from a 100 mm bore that yields 3927 N push force at 0.5 MPa. The adjustable stroke is ideal for production lines that require frequent product-size changeovers, giving you a 170-180 mm travel window to set precise end stops without adding external physical stops. For load-holding without live air pressure, this cylinder is insufficient; you should consider the SAIL pneumatic lock or BSAI clamp-lock series instead.
Since the 180 mm stroke is below the 300 mm threshold, side-load stress on the 32 mm rod is moderate, but an external guide remains recommended for heavy lateral loads. This unit is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2. It operates efficiently within the 30-500 mm/s speed range specific to large-bore cylinders.
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 SAIJ125AX180-10 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder 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 acts as a mechanical stop that lets you shorten the effective stroke by up to 10 mm, creating a 170-180 mm usable travel window. It sets the end position but does not lock the load without continuous air pressure.
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