Airtac SAI125 Standard Air Cylinder SAI125X145S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X145S 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 SAI125X145S
The AirTAC SAI125X145-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It provides a substantial push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it well-suited for moving substantial masses over its 145 mm stroke. The extruded aluminum barrel design omits tie-rods, offering a clean exterior that simplifies mounting and sensor placement.
This specific configuration includes a magnetic piston (-S) for position detection via CMSE or DMSE switches, which seat neatly into the dual sensor grooves on the barrel. The standard carbon steel piston rod ensures robust durability, while the adjustable air cushions at both ends absorb impact energy at the 30-500 mm/s operating speed range.
Airtac SAI125 Standard Air Cylinder SAI125X145S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X145S |
|---|---|
| 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 SAI125X145S
| 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 SAI125X145S Is Used
Heavy Stamping
Provides the robust 6136 N push force required to actuate large mechanical presses and form heavy-gauge metal components securely.
Pallet Diversion
Generates enough linear power to redirect fully loaded pallets along high-capacity material handling lines without hesitation.
Large Clamp Fixtures
Holds oversized industrial workpieces steady during machining or welding operations, utilizing its 5734 N pull force to maintain grip.
Is the Airtac SAI125 Standard Air Cylinder SAI125X145S the Right Cylinder?
Select this 125 mm bore when a 100 mm bore falls short—specifically when the 3927 N push force at 0.5 MPa from the smaller size is insufficient for your load. If your application requires even more power, stepping up to the 160 mm bore yields 10053 N at the same pressure. Because this model features a 145 mm stroke, side-load stress on the rod bearing is minimal compared to longer strokes, though external guides are always recommended for heavy payloads.
This cylinder functions as a direct, dimensionally interchangeable drop-in replacement for any ISO 15552 profile cylinder. To match this exact configuration, specify the 125 mm bore, 145 mm stroke, PT tapered port thread, G1/2 port size, and the -S magnet option. Note that a standard double-acting cylinder will drift if air pressure is lost; if your application requires strict position holding without live pressure, consider the SAIL (lock) or BSAI (clamp-lock) variants.
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 SAI125X145S FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder 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-S is dimensionally interchangeable per ISO 15552 standards. It shares the same mounting interface and G1/2 port size as other ISO 15552 profile cylinders, allowing it to serve as a direct drop-in replacement.
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