Airtac SAI125 Standard Air Cylinder SAI125BX145
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX145 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 145mm 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
- Stroke145 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX145
The AirTAC SAI125X145 is a double-acting ISO 15552 profile cylinder delivering 6136 N of push force at 0.5 MPa. With a 145 mm stroke, it is built for heavy-duty automation tasks. This specific configuration features a SUS304 stainless steel rod for superior corrosion resistance and PT tapered port threads.
Because this variant lacks a magnet, it cannot trigger CMSE or DMSE sensors. If your workflow demands end-of-stroke detection, you must select an SAI125X145-S variant instead. For operations needing position holding without live air pressure, the SAIL lock or BSAI clamp-lock derivatives are the correct solutions.
Airtac SAI125 Standard Air Cylinder SAI125BX145 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX145 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 145 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 SAI125 Standard Air Cylinder SAI125BX145
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×145 | 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 SAI125 Standard Air Cylinder SAI125BX145 Is Used
Heavy Stamping
Provides the robust 6136 N push force required to operate heavy metal stamping presses and form thick-gauge materials.
Pallet Halting
Acts as a high-force stopper mechanism for large-scale conveyor lines carrying heavy pallets or industrial components.
Plastic Molding
Handles core pulling and heavy ejection duties within plastic injection molding machinery where high kinetic output is necessary.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX145 the Right Cylinder?
This 125 mm bore provides 6136 N push force at 0.5 MPa. If your application requires less force, a 100 mm bore offers 3927 N, whereas stepping up to a 160 mm bore yields 10053 N. The 145 mm stroke is well below the 1500 mm maximum standard stroke, keeping the rod-bearing bending stress manageable without needing an external guide.
Being a true ISO 15552 profile cylinder, it serves as a drop-in replacement for any cylinder matching those mounting-interface dimensions. To complete your setup, specify PT port threads, your desired mounting accessory (such as LB foot or TC trunnion), and ensure you select the -S suffix if you require sensor tracks.
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 SAI125 Standard Air Cylinder SAI125BX145 FAQ
At 0.5 MPa, this 125 mm bore cylinder provides a push force of 6136 N and a pull force of 5734 N.
Yes, the SAI125X145 is dimensionally interchangeable per ISO 15552, meaning it matches the standard mounting interface for cylinders of the same bore size.
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