Airtac SAI125 Standard Air Cylinder SAI125X145
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X145 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 SAI125X145
The AirTAC SAI125X145 is a double-acting ISO 15552 profile cylinder featuring a 125mm bore and 145mm stroke. It delivers a robust push force of 6136 N at 0.5 MPa, making it well-suited for heavy-duty actuation tasks requiring substantial thrust over a moderate distance. The extruded aluminum barrel design omits tie rods, providing a clean exterior while maintaining strict dimensional interchangeability with other ISO 15552 standard cylinders.
This specific configuration features a standard carbon steel piston rod and PT (tapered) port threads. Because it lacks the -S magnet option, it is optimized for pure mechanical actuation rather than electronic position sensing. For applications requiring higher thermal resistance, the cylinder architecture supports Viton (H) seals, though standard TPU seals handle general industrial environments flawlessly.
Airtac SAI125 Standard Air Cylinder SAI125X145 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X145 |
|---|---|
| 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 SAI125X145
| 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 SAI125X145 Is Used
Heavy Metal Stamping
Provides the high thrust necessary for pressing and stamping rigid metal components in automated fabrication lines.
Injection Mold Ejection
Delivers reliable, powerful ejection force to remove dense plastic parts from large industrial injection molds.
Pallet Diverting
Actuates heavy-duty diverters on high-throughput packaging conveyors to route loaded pallets efficiently.
Is the Airtac SAI125 Standard Air Cylinder SAI125X145 the Right Cylinder?
Selecting this 125mm bore model provides 6136 N of push force at 0.5 MPa. If your application requires less force, stepping down to the 100mm bore yields 3927 N at 0.5 MPa, whereas moving up to the 160mm bore offers 10053 N. At 145mm of stroke, the rod bearing handles side loads well, but always ensure the load is guided externally to prevent binding. Because this is a standard double-acting cylinder, air pressure must be maintained to hold a load; if the air is exhausted, the piston will drift. For fail-safe holding, consider the SAIL variant with an air-released lock or the BSAI clamp-lock cylinder. To replace an existing unit, match the 125mm bore, 145mm stroke, PT G1/2 ports, and required mounting accessories like FA or TC brackets.
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 SAI125X145 FAQ
At 0.5 MPa operating pressure, the SAI125X145 generates a push force of 6136 N and a pull force of 5734 N. If pressure is increased to 0.7 MPa, the push force rises to 8590 N.
Yes. The SAI125X145 is a genuine AirTAC profile cylinder built to ISO 15552 mounting dimensions, making it a drop-in replacement for other ISO 15552 cylinders with matching 125mm bore, 145mm stroke, and G1/2 port sizes.
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